Президентский ФМЛ №239

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|  1.  |   $16x^2-10x-6=0; $   |   $1; -\dfrac{3}{8}$   |
|  2.  |   $-6x^2-17x+14=0; $   |   $\dfrac{2}{3}; -\dfrac{7}{2}$   |
|  3.  |   $-19x^2+9x+10=0; $   |   $1; -\dfrac{10}{19}$   |
|  4.  |   $6x^2-20x-16=0; $   |   $4; -\dfrac{2}{3}$   |
|  5.  |   $9x^2+x+15=0; $   |   $\varnothing$   |
|  6.  |   $12x^2-18x-12=0; $   |   $2; -\dfrac{1}{2}$   |
|  7.  |   $16x^2-20x+4=0; $   |   $1; \dfrac{1}{4}$   |
|  8.  |   $-8x^2+5x+15=0; $   |   $\dfrac{5\pm\sqrt{505}}{16}$   |
|  9.  |   $16x^2+6x-10=0; $   |   $\dfrac{5}{8}; -1$   |
|  10.  |   $-14x^2-12x+6=0; $   |   $\dfrac{-3\pm\sqrt{30}}{7}$   |
|  11.  |   $-12x^2-17x+14=0; $   |   $\dfrac{7}{12}; -2$   |
|  12.  |   $-x^2-9x+10=0; $   |   $1; -10$   |
|  13.  |   $-3x^2-7x+6=0; $   |   $\dfrac{2}{3}; -3$   |
|  14.  |   $4x^2-9x-13=0; $   |   $\dfrac{13}{4}; -1$   |
|  15.  |   $4x^2-15x+14=0; $   |   $2; \dfrac{7}{4}$   |
|  16.  |   $16x^2-2x-5=0; $   |   $\dfrac{5}{8}; -\dfrac{1}{2}$   |
|  17.  |   $2x^2+4x-3=0; $   |   $\dfrac{-2\pm\sqrt{10}}{2}$   |
|  18.  |   $-9x^2+20x-11=0; $   |   $\dfrac{11}{9}; 1$   |
|  19.  |   $-14x^2-17x-1=0; $   |   $\dfrac{-17\pm\sqrt{233}}{28}$   |
|  20.  |   $-9x^2+15x-7=0; $   |   $\varnothing$   |
|  21.  |   $14x^2-2x-16=0; $   |   $\dfrac{8}{7}; -1$   |
|  22.  |   $3x^2+8x+5=0; $   |   $-1; -\dfrac{5}{3}$   |
|  23.  |   $7x^2+5x+10=0; $   |   $\varnothing$   |
|  24.  |   $2x^2-11x+9=0; $   |   $\dfrac{9}{2}; 1$   |
|  25.  |   $-10x^2-9x+19=0; $   |   $1; -\dfrac{19}{10}$   |
|  26.  |   $19x^2+4x-15=0; $   |   $\dfrac{15}{19}; -1$   |
|  27.  |   $-4x^2-9x+20=0; $   |   $\dfrac{-9\pm\sqrt{401}}{8}$   |
|  28.  |   $-13x^2-18x+16=0; $   |   $\dfrac{8}{13}; -2$   |
|  29.  |   $-x^2-15x-14=0; $   |   $-1; -14$   |
|  30.  |   $-18x^2-17x+4=0; $   |   $\dfrac{-17\pm\sqrt{577}}{36}$   |
|  31.  |   $-8x^2+12x-1=0; $   |   $\dfrac{3\pm\sqrt{7}}{4}$   |
|  32.  |   $8x^2-17x+2=0; $   |   $2; \dfrac{1}{8}$   |
|  33.  |   $-5x^2-3x+14=0; $   |   $\dfrac{7}{5}; -2$   |
|  34.  |   $-16x^2-2x+15=0; $   |   $\dfrac{-1\pm\sqrt{241}}{16}$   |
|  35.  |   $5x^2-4x-9=0; $   |   $\dfrac{9}{5}; -1$   |
|  36.  |   $5x^2+14x-11=0; $   |   $\dfrac{-7\pm2\sqrt{26}}{5}$   |
|  37.  |   $5x^2+14x+9=0; $   |   $-1; -\dfrac{9}{5}$   |
|  38.  |   $-2x^2+15x-18=0; $   |   $6; \dfrac{3}{2}$   |
|  39.  |   $-15x^2-8x-10=0; $   |   $\varnothing$   |
|  40.  |   $15x^2+17x+4=0; $   |   $-\dfrac{1}{3}; -\dfrac{4}{5}$   |
|  41.  |   $-2x^2+7x+20=0; $   |   $\dfrac{7\pm\sqrt{209}}{4}$   |
|  42.  |   $14x^2+13x+9=0; $   |   $\varnothing$   |
|  43.  |   $-11x^2-20x+5=0; $   |   $\dfrac{-10\pm\sqrt{155}}{11}$   |
|  44.  |   $2x^2-11x+12=0; $   |   $4; \dfrac{3}{2}$   |
|  45.  |   $-x^2+4x+4=0; $   |   $2\pm2\sqrt{2}$   |
|  46.  |   $-7x^2+20x+16=0; $   |   $\dfrac{10\pm2\sqrt{53}}{7}$   |
|  47.  |   $-x^2+11x-10=0; $   |   $10; 1$   |
|  48.  |   $-12x^2-4x+8=0; $   |   $\dfrac{2}{3}; -1$   |
|  49.  |   $3x^2+14x-17=0; $   |   $1; -\dfrac{17}{3}$   |
|  50.  |   $-17x^2-20x+7=0; $   |   $\dfrac{-10\pm\sqrt{219}}{17}$   |
|  51.  |   $2x^2-5x-7=0; $   |   $\dfrac{7}{2}; -1$   |
|  52.  |   $-10x^2-7x+3=0; $   |   $\dfrac{3}{10}; -1$   |
|  53.  |   $15x^2+10x-19=0; $   |   $\dfrac{-5\pm\sqrt{310}}{15}$   |
|  54.  |   $-2x^2-6x-4=0; $   |   $-1; -2$   |
|  55.  |   $11x^2+13x-18=0; $   |   $\dfrac{9}{11}; -2$   |
|  56.  |   $-13x^2-2x+15=0; $   |   $1; -\dfrac{15}{13}$   |
|  57.  |   $-7x^2+12x+4=0; $   |   $2; -\dfrac{2}{7}$   |
|  58.  |   $3x^2+12x+13=0; $   |   $\varnothing$   |
|  59.  |   $8x^2+18x+7=0; $   |   $-\dfrac{1}{2}; -\dfrac{7}{4}$   |
|  60.  |   $8x^2+9x-5=0; $   |   $\dfrac{-9\pm\sqrt{241}}{16}$   |
|  61.  |   $2x^2-16x+10=0; $   |   $4\pm\sqrt{11}$   |
|  62.  |   $-7x^2+16x-9=0; $   |   $\dfrac{9}{7}; 1$   |
|  63.  |   $-15x^2+20x+20=0; $   |   $2; -\dfrac{2}{3}$   |
|  64.  |   $18x^2-3x-10=0; $   |   $\dfrac{5}{6}; -\dfrac{2}{3}$   |
|  65.  |   $17x^2-3x-18=0; $   |   $\dfrac{3\pm3\sqrt{137}}{34}$   |
|  66.  |   $-10x^2+13x+9=0; $   |   $\dfrac{9}{5}; -\dfrac{1}{2}$   |
|  67.  |   $7x^2+8x+1=0; $   |   $-\dfrac{1}{7}; -1$   |
|  68.  |   $-17x^2+19x-2=0; $   |   $1; \dfrac{2}{17}$   |
|  69.  |   $20x^2-14x+2=0; $   |   $\dfrac{1}{2}; \dfrac{1}{5}$   |
|  70.  |   $-19x^2-17x+2=0; $   |   $\dfrac{2}{19}; -1$   |
|  71.  |   $19x^2+13x+19=0; $   |   $\varnothing$   |
|  72.  |   $15x^2-14x-8=0; $   |   $\dfrac{4}{3}; -\dfrac{2}{5}$   |
|  73.  |   $7x^2-20x+10=0; $   |   $\dfrac{10\pm\sqrt{30}}{7}$   |
|  74.  |   $x^2+7x-8=0; $   |   $1; -8$   |
|  75.  |   $-18x^2-10x+15=0; $   |   $\dfrac{-5\pm\sqrt{295}}{18}$   |
|  76.  |   $12x^2-8x-4=0; $   |   $1; -\dfrac{1}{3}$   |
|  77.  |   $-x^2+11x+20=0; $   |   $\dfrac{11\pm\sqrt{201}}{2}$   |
|  78.  |   $-4x^2+17x-4=0; $   |   $4; \dfrac{1}{4}$   |
|  79.  |   $7x^2-18x-9=0; $   |   $3; -\dfrac{3}{7}$   |
|  80.  |   $-19x^2+6x+13=0; $   |   $1; -\dfrac{13}{19}$   |
|  81.  |   $16x^2-14x+3=0; $   |   $\dfrac{1}{2}; \dfrac{3}{8}$   |
|  82.  |   $2x^2+19x-7=0; $   |   $\dfrac{-19\pm\sqrt{417}}{4}$   |
|  83.  |   $4x^2-20x+9=0; $   |   $\dfrac{9}{2}; \dfrac{1}{2}$   |
|  84.  |   $-15x^2+x+4=0; $   |   $\dfrac{1\pm\sqrt{241}}{30}$   |
|  85.  |   $-10x^2+19x-9=0; $   |   $1; \dfrac{9}{10}$   |
|  86.  |   $18x^2+4x+10=0; $   |   $\varnothing$   |
|  87.  |   $-10x^2-11x+18=0; $   |   $\dfrac{9}{10}; -2$   |
|  88.  |   $-4x^2+3x+1=0; $   |   $1; -\dfrac{1}{4}$   |
|  89.  |   $-14x^2-2x+12=0; $   |   $\dfrac{6}{7}; -1$   |
|  90.  |   $-5x^2+9x+8=0; $   |   $\dfrac{9\pm\sqrt{241}}{10}$   |
|  91.  |   $-8x^2+13x-4=0; $   |   $\dfrac{13\pm\sqrt{41}}{16}$   |
|  92.  |   $x^2+4x+18=0; $   |   $\varnothing$   |
|  93.  |   $-11x^2-13x-2=0; $   |   $-\dfrac{2}{11}; -1$   |
|  94.  |   $-5x^2-7x+12=0; $   |   $1; -\dfrac{12}{5}$   |
|  95.  |   $-2x^2-19x-10=0; $   |   $\dfrac{-19\pm\sqrt{281}}{4}$   |
|  96.  |   $-9x^2-15x-4=0; $   |   $-\dfrac{1}{3}; -\dfrac{4}{3}$   |
|  97.  |   $-8x^2+2x+15=0; $   |   $\dfrac{3}{2}; -\dfrac{5}{4}$   |
|  98.  |   $3x^2-10x+3=0; $   |   $3; \dfrac{1}{3}$   |
|  99.  |   $-16x^2-19x-20=0; $   |   $\varnothing$   |
|  100.  |   $10x^2+11x+3=0; $   |   $-\dfrac{1}{2}; -\dfrac{3}{5}$   |
|  101.  |   $-4x^2+2x+2=0; $   |   $1; -\dfrac{1}{2}$   |
|  102.  |   $9x^2+14x-14=0; $   |   $\dfrac{-7\pm5\sqrt{7}}{9}$   |
|  103.  |   $-9x^2+8x+1=0; $   |   $1; -\dfrac{1}{9}$   |
|  104.  |   $-5x^2-11x+12=0; $   |   $\dfrac{4}{5}; -3$   |
|  105.  |   $-17x^2-4x+13=0; $   |   $\dfrac{13}{17}; -1$   |
|  106.  |   $-12x^2+15x-8=0; $   |   $\varnothing$   |
|  107.  |   $11x^2+5x+8=0; $   |   $\varnothing$   |
|  108.  |   $3x^2-2x-16=0; $   |   $\dfrac{8}{3}; -2$   |
|  109.  |   $x^2+9x-14=0; $   |   $\dfrac{-9\pm\sqrt{137}}{2}$   |
|  110.  |   $-7x^2+9x+16=0; $   |   $\dfrac{16}{7}; -1$   |
|  111.  |   $-11x^2+14x-7=0; $   |   $\varnothing$   |
|  112.  |   $-15x^2+7x+2=0; $   |   $\dfrac{2}{3}; -\dfrac{1}{5}$   |
|  113.  |   $8x^2+4x-20=0; $   |   $\dfrac{-1\pm\sqrt{41}}{4}$   |
|  114.  |   $10x^2+x-9=0; $   |   $\dfrac{9}{10}; -1$   |
|  115.  |   $6x^2+3x-12=0; $   |   $\dfrac{-1\pm\sqrt{33}}{4}$   |
|  116.  |   $10x^2-13x-3=0; $   |   $\dfrac{3}{2}; -\dfrac{1}{5}$   |
|  117.  |   $8x^2-20x-20=0; $   |   $\dfrac{5\pm\sqrt{65}}{4}$   |
|  118.  |   $6x^2+10x-4=0; $   |   $\dfrac{1}{3}; -2$   |
|  119.  |   $10x^2+3x-4=0; $   |   $\dfrac{1}{2}; -\dfrac{4}{5}$   |
|  120.  |   $10x^2-3x-18=0; $   |   $\dfrac{3}{2}; -\dfrac{6}{5}$   |
|  121.  |   $-10x^2-17x+11=0; $   |   $\dfrac{1}{2}; -\dfrac{11}{5}$   |
|  122.  |   $-4x^2+9x-12=0; $   |   $\varnothing$   |
|  123.  |   $16x^2-18x+5=0; $   |   $\dfrac{5}{8}; \dfrac{1}{2}$   |
|  124.  |   $-4x^2-7x+2=0; $   |   $\dfrac{1}{4}; -2$   |
|  125.  |   $4x^2+9x-16=0; $   |   $\dfrac{-9\pm\sqrt{337}}{8}$   |
|  126.  |   $18x^2-7x-1=0; $   |   $\dfrac{1}{2}; -\dfrac{1}{9}$   |
|  127.  |   $-20x^2-7x+13=0; $   |   $\dfrac{13}{20}; -1$   |
|  128.  |   $-18x^2-13x+12=0; $   |   $\dfrac{-13\pm\sqrt{1033}}{36}$   |
|  129.  |   $-13x^2+6x+2=0; $   |   $\dfrac{3\pm\sqrt{35}}{13}$   |
|  130.  |   $-19x^2-12x+14=0; $   |   $\dfrac{-6\pm\sqrt{302}}{19}$   |
|  131.  |   $5x^2-17x+12=0; $   |   $\dfrac{12}{5}; 1$   |
|  132.  |   $20x^2-7x-10=0; $   |   $\dfrac{7\pm\sqrt{849}}{40}$   |
|  133.  |   $5x^2+2x-3=0; $   |   $\dfrac{3}{5}; -1$   |
|  134.  |   $-20x^2-5x+5=0; $   |   $\dfrac{-1\pm\sqrt{17}}{8}$   |
|  135.  |   $-3x^2-8x-4=0; $   |   $-\dfrac{2}{3}; -2$   |
|  136.  |   $-5x^2+6x-1=0; $   |   $1; \dfrac{1}{5}$   |
|  137.  |   $-3x^2+20x-5=0; $   |   $\dfrac{10\pm\sqrt{85}}{3}$   |
|  138.  |   $10x^2-15x-11=0; $   |   $\dfrac{15\pm\sqrt{665}}{20}$   |
|  139.  |   $18x^2-18x-14=0; $   |   $\dfrac{3\pm\sqrt{37}}{6}$   |
|  140.  |   $-3x^2-10x-3=0; $   |   $-\dfrac{1}{3}; -3$   |
|  141.  |   $11x^2-19x+17=0; $   |   $\varnothing$   |
|  142.  |   $4x^2+7x+2=0; $   |   $\dfrac{-7\pm\sqrt{17}}{8}$   |
|  143.  |   $-3x^2+20x+7=0; $   |   $7; -\dfrac{1}{3}$   |
|  144.  |   $-7x^2+4x+20=0; $   |   $2; -\dfrac{10}{7}$   |
|  145.  |   $-5x^2+3x+8=0; $   |   $\dfrac{8}{5}; -1$   |
|  146.  |   $20x^2+12x+1=0; $   |   $-\dfrac{1}{10}; -\dfrac{1}{2}$   |
|  147.  |   $10x^2-14x+4=0; $   |   $1; \dfrac{2}{5}$   |
|  148.  |   $-17x^2+3x+14=0; $   |   $1; -\dfrac{14}{17}$   |
|  149.  |   $10x^2-5x-15=0; $   |   $\dfrac{3}{2}; -1$   |
|  150.  |   $-3x^2-10x-11=0; $   |   $\varnothing$   |
|  151.  |   $-3x^2+14x-8=0; $   |   $4; \dfrac{2}{3}$   |
|  152.  |   $-18x^2-18x-4=0; $   |   $-\dfrac{1}{3}; -\dfrac{2}{3}$   |
|  153.  |   $19x^2+8x-11=0; $   |   $\dfrac{11}{19}; -1$   |
|  154.  |   $-16x^2-15x+1=0; $   |   $\dfrac{1}{16}; -1$   |
|  155.  |   $-19x^2+2x+17=0; $   |   $1; -\dfrac{17}{19}$   |
|  156.  |   $-13x^2+2x+18=0; $   |   $\dfrac{1\pm\sqrt{235}}{13}$   |
|  157.  |   $-13x^2+15x+17=0; $   |   $\dfrac{15\pm\sqrt{1109}}{26}$   |
|  158.  |   $5x^2-2x-3=0; $   |   $1; -\dfrac{3}{5}$   |
|  159.  |   $13x^2-12x+5=0; $   |   $\varnothing$   |
|  160.  |   $8x^2+5x-13=0; $   |   $1; -\dfrac{13}{8}$   |
|  161.  |   $-10x^2-x-6=0; $   |   $\varnothing$   |
|  162.  |   $-5x^2+13x-8=0; $   |   $\dfrac{8}{5}; 1$   |
|  163.  |   $2x^2+19x+17=0; $   |   $-1; -\dfrac{17}{2}$   |
|  164.  |   $8x^2-6x+9=0; $   |   $\varnothing$   |
|  165.  |   $12x^2-7x-19=0; $   |   $\dfrac{19}{12}; -1$   |
|  166.  |   $19x^2+6x-13=0; $   |   $\dfrac{13}{19}; -1$   |
|  167.  |   $4x^2+12x+4=0; $   |   $\dfrac{-3\pm\sqrt{5}}{2}$   |
|  168.  |   $5x^2+9x+20=0; $   |   $\varnothing$   |
|  169.  |   $-5x^2+14x-8=0; $   |   $2; \dfrac{4}{5}$   |
|  170.  |   $-10x^2-11x-1=0; $   |   $-\dfrac{1}{10}; -1$   |
|  171.  |   $2x^2-2x+11=0; $   |   $\varnothing$   |
|  172.  |   $-2x^2-5x+3=0; $   |   $\dfrac{1}{2}; -3$   |
|  173.  |   $-4x^2+x+14=0; $   |   $2; -\dfrac{7}{4}$   |
|  174.  |   $-12x^2+12x+5=0; $   |   $\dfrac{3\pm2\sqrt{6}}{6}$   |
|  175.  |   $8x^2-7x+10=0; $   |   $\varnothing$   |
|  176.  |   $-14x^2+15x+11=0; $   |   $\dfrac{11}{7}; -\dfrac{1}{2}$   |
|  177.  |   $10x^2-x-3=0; $   |   $\dfrac{3}{5}; -\dfrac{1}{2}$   |
|  178.  |   $-4x^2-x+18=0; $   |   $2; -\dfrac{9}{4}$   |
|  179.  |   $10x^2-9x-9=0; $   |   $\dfrac{3}{2}; -\dfrac{3}{5}$   |
|  180.  |   $15x^2-18x-12=0; $   |   $\dfrac{3\pm\sqrt{29}}{5}$   |
|  181.  |   $-7x^2+x+6=0; $   |   $1; -\dfrac{6}{7}$   |
|  182.  |   $11x^2+11x-7=0; $   |   $\dfrac{-11\pm\sqrt{429}}{22}$   |
|  183.  |   $-5x^2+18x+8=0; $   |   $4; -\dfrac{2}{5}$   |
|  184.  |   $-13x^2-14x-8=0; $   |   $\varnothing$   |
|  185.  |   $8x^2+14x+5=0; $   |   $-\dfrac{1}{2}; -\dfrac{5}{4}$   |
|  186.  |   $12x^2-10x-8=0; $   |   $\dfrac{4}{3}; -\dfrac{1}{2}$   |
|  187.  |   $9x^2-18x-18=0; $   |   $1\pm\sqrt{3}$   |
|  188.  |   $-4x^2+3x+10=0; $   |   $2; -\dfrac{5}{4}$   |
|  189.  |   $-11x^2-8x+19=0; $   |   $1; -\dfrac{19}{11}$   |
|  190.  |   $-16x^2-19x-3=0; $   |   $-\dfrac{3}{16}; -1$   |
|  191.  |   $-8x^2+x+9=0; $   |   $\dfrac{9}{8}; -1$   |
|  192.  |   $-13x^2-8x+5=0; $   |   $\dfrac{5}{13}; -1$   |
|  193.  |   $10x^2-9x-16=0; $   |   $\dfrac{9\pm\sqrt{721}}{20}$   |
|  194.  |   $-3x^2-19x-6=0; $   |   $-\dfrac{1}{3}; -6$   |
|  195.  |   $-8x^2-7x+15=0; $   |   $1; -\dfrac{15}{8}$   |
|  196.  |   $-8x^2-20x-8=0; $   |   $-\dfrac{1}{2}; -2$   |
|  197.  |   $10x^2+19x+8=0; $   |   $\dfrac{-19\pm\sqrt{41}}{20}$   |
|  198.  |   $12x^2+8x-4=0; $   |   $\dfrac{1}{3}; -1$   |
|  199.  |   $11x^2+2x-13=0; $   |   $1; -\dfrac{13}{11}$   |
|  200.  |   $-3x^2+10x-7=0; $   |   $\dfrac{7}{3}; 1$   |
|  201.  |   $20x^2+13x-7=0; $   |   $\dfrac{7}{20}; -1$   |
|  202.  |   $-14x^2+12x+2=0; $   |   $1; -\dfrac{1}{7}$   |
|  203.  |   $-4x^2+11x-1=0; $   |   $\dfrac{11\pm\sqrt{105}}{8}$   |
|  204.  |   $6x^2+9x+3=0; $   |   $-\dfrac{1}{2}; -1$   |
|  205.  |   $-8x^2+19x-11=0; $   |   $\dfrac{11}{8}; 1$   |
|  206.  |   $12x^2+7x-10=0; $   |   $\dfrac{2}{3}; -\dfrac{5}{4}$   |
|  207.  |   $15x^2+6x+2=0; $   |   $\varnothing$   |
|  208.  |   $7x^2+18x+1=0; $   |   $\dfrac{-9\pm\sqrt{74}}{7}$   |
|  209.  |   $12x^2+5x-7=0; $   |   $\dfrac{7}{12}; -1$   |
|  210.  |   $-13x^2+17x-4=0; $   |   $1; \dfrac{4}{13}$   |
|  211.  |   $3x^2-13x-12=0; $   |   $\dfrac{13\pm\sqrt{313}}{6}$   |
|  212.  |   $7x^2+2x+12=0; $   |   $\varnothing$   |
|  213.  |   $7x^2+5x-12=0; $   |   $1; -\dfrac{12}{7}$   |
|  214.  |   $4x^2+7x+3=0; $   |   $-\dfrac{3}{4}; -1$   |
|  215.  |   $15x^2-17x+4=0; $   |   $\dfrac{4}{5}; \dfrac{1}{3}$   |
|  216.  |   $-6x^2-19x+12=0; $   |   $\dfrac{-19\pm\sqrt{649}}{12}$   |
|  217.  |   $18x^2-3x-20=0; $   |   $\dfrac{1\pm\sqrt{161}}{12}$   |
|  218.  |   $-5x^2+19x+19=0; $   |   $\dfrac{19\pm\sqrt{741}}{10}$   |
|  219.  |   $x^2-3x+1=0; $   |   $\dfrac{3\pm\sqrt{5}}{2}$   |
|  220.  |   $4x^2-9x-15=0; $   |   $\dfrac{9\pm\sqrt{321}}{8}$   |
|  221.  |   $8x^2+10x-12=0; $   |   $\dfrac{3}{4}; -2$   |
|  222.  |   $15x^2-16x+7=0; $   |   $\varnothing$   |
|  223.  |   $2x^2+x-10=0; $   |   $2; -\dfrac{5}{2}$   |
|  224.  |   $-16x^2-14x+15=0; $   |   $\dfrac{5}{8}; -\dfrac{3}{2}$   |
|  225.  |   $-20x^2+13x+15=0; $   |   $\dfrac{5}{4}; -\dfrac{3}{5}$   |
|  226.  |   $-14x^2-18x-8=0; $   |   $\varnothing$   |
|  227.  |   $19x^2+15x-4=0; $   |   $\dfrac{4}{19}; -1$   |
|  228.  |   $4x^2-20x-11=0; $   |   $\dfrac{11}{2}; -\dfrac{1}{2}$   |
|  229.  |   $10x^2-19x+6=0; $   |   $\dfrac{3}{2}; \dfrac{2}{5}$   |
|  230.  |   $15x^2-20x-10=0; $   |   $\dfrac{2\pm\sqrt{10}}{3}$   |
|  231.  |   $20x^2-11x-3=0; $   |   $\dfrac{3}{4}; -\dfrac{1}{5}$   |
|  232.  |   $18x^2-19x+1=0; $   |   $1; \dfrac{1}{18}$   |
|  233.  |   $-14x^2-15x+9=0; $   |   $\dfrac{3}{7}; -\dfrac{3}{2}$   |
|  234.  |   $20x^2+3x-17=0; $   |   $\dfrac{17}{20}; -1$   |
|  235.  |   $3x^2+3x-18=0; $   |   $2; -3$   |
|  236.  |   $x^2-16x+2=0; $   |   $8\pm\sqrt{62}$   |
|  237.  |   $-6x^2+x+1=0; $   |   $\dfrac{1}{2}; -\dfrac{1}{3}$   |
|  238.  |   $-10x^2-6x-16=0; $   |   $\varnothing$   |
|  239.  |   $16x^2-14x-17=0; $   |   $\dfrac{7\pm\sqrt{321}}{16}$   |
|  240.  |   $-4x^2-18x-7=0; $   |   $\dfrac{-9\pm\sqrt{53}}{4}$   |
|  241.  |   $-20x^2-17x-8=0; $   |   $\varnothing$   |
|  242.  |   $-3x^2-14x+1=0; $   |   $\dfrac{-7\pm2\sqrt{13}}{3}$   |
|  243.  |   $-18x^2-11x+10=0; $   |   $\dfrac{1}{2}; -\dfrac{10}{9}$   |
|  244.  |   $12x^2+3x+5=0; $   |   $\varnothing$   |
|  245.  |   $9x^2-18x-7=0; $   |   $\dfrac{7}{3}; -\dfrac{1}{3}$   |
|  246.  |   $x^2-15x+14=0; $   |   $14; 1$   |
|  247.  |   $-10x^2+18x-8=0; $   |   $1; \dfrac{4}{5}$   |
|  248.  |   $-10x^2-13x+10=0; $   |   $\dfrac{-13\pm\sqrt{569}}{20}$   |
|  249.  |   $10x^2-8x-2=0; $   |   $1; -\dfrac{1}{5}$   |
|  250.  |   $-2x^2+11x-15=0; $   |   $3; \dfrac{5}{2}$   |
|  251.  |   $4x^2+14x+10=0; $   |   $-1; -\dfrac{5}{2}$   |
|  252.  |   $17x^2-20x-8=0; $   |   $\dfrac{10\pm2\sqrt{59}}{17}$   |
|  253.  |   $10x^2+3x-13=0; $   |   $1; -\dfrac{13}{10}$   |
|  254.  |   $3x^2-10x-13=0; $   |   $\dfrac{13}{3}; -1$   |
|  255.  |   $-x^2-19x-19=0; $   |   $\dfrac{-19\pm\sqrt{285}}{2}$   |
|  256.  |   $-3x^2+19x-20=0; $   |   $5; \dfrac{4}{3}$   |
|  257.  |   $x^2+6x+8=0; $   |   $-2; -4$   |
|  258.  |   $13x^2+7x-6=0; $   |   $\dfrac{6}{13}; -1$   |
|  259.  |   $7x^2-17x+6=0; $   |   $2; \dfrac{3}{7}$   |
|  260.  |   $-16x^2+12x-2=0; $   |   $\dfrac{1}{2}; \dfrac{1}{4}$   |
|  261.  |   $20x^2-2x-12=0; $   |   $\dfrac{1\pm\sqrt{241}}{20}$   |
|  262.  |   $9x^2-8x-20=0; $   |   $2; -\dfrac{10}{9}$   |
|  263.  |   $-11x^2+6x+17=0; $   |   $\dfrac{17}{11}; -1$   |
|  264.  |   $9x^2+10x-16=0; $   |   $\dfrac{8}{9}; -2$   |
|  265.  |   $-9x^2+13x-5=0; $   |   $\varnothing$   |
|  266.  |   $15x^2-18x-14=0; $   |   $\dfrac{9\pm\sqrt{291}}{15}$   |
|  267.  |   $x^2-20x-6=0; $   |   $10\pm\sqrt{106}$   |
|  268.  |   $7x^2+16x+9=0; $   |   $-1; -\dfrac{9}{7}$   |
|  269.  |   $14x^2-10x-4=0; $   |   $1; -\dfrac{2}{7}$   |
|  270.  |   $12x^2-10x-6=0; $   |   $\dfrac{5\pm\sqrt{97}}{12}$   |
|  271.  |   $12x^2-x+16=0; $   |   $\varnothing$   |
|  272.  |   $-x^2+x+16=0; $   |   $\dfrac{1\pm\sqrt{65}}{2}$   |
|  273.  |   $-x^2-x+2=0; $   |   $1; -2$   |
|  274.  |   $6x^2-17x-3=0; $   |   $3; -\dfrac{1}{6}$   |
|  275.  |   $-4x^2-9x-5=0; $   |   $-1; -\dfrac{5}{4}$   |
|  276.  |   $-15x^2-x+6=0; $   |   $\dfrac{3}{5}; -\dfrac{2}{3}$   |
|  277.  |   $-19x^2-x-11=0; $   |   $\varnothing$   |
|  278.  |   $-2x^2-9x+5=0; $   |   $\dfrac{1}{2}; -5$   |
|  279.  |   $16x^2+8x-3=0; $   |   $\dfrac{1}{4}; -\dfrac{3}{4}$   |
|  280.  |   $20x^2+10x+18=0; $   |   $\varnothing$   |
|  281.  |   $3x^2-3x-15=0; $   |   $\dfrac{1\pm\sqrt{21}}{2}$   |
|  282.  |   $-3x^2+12x-12=0; $   |   $2$   |
|  283.  |   $8x^2+14x-13=0; $   |   $\dfrac{-7\pm3\sqrt{17}}{8}$   |
|  284.  |   $3x^2+x-4=0; $   |   $1; -\dfrac{4}{3}$   |
|  285.  |   $16x^2+12x-4=0; $   |   $\dfrac{1}{4}; -1$   |
|  286.  |   $-2x^2+3x+5=0; $   |   $\dfrac{5}{2}; -1$   |
|  287.  |   $-6x^2+10x-4=0; $   |   $1; \dfrac{2}{3}$   |
|  288.  |   $-4x^2-x-8=0; $   |   $\varnothing$   |
|  289.  |   $5x^2+9x-2=0; $   |   $\dfrac{1}{5}; -2$   |
|  290.  |   $6x^2-19x-20=0; $   |   $4; -\dfrac{5}{6}$   |
|  291.  |   $-2x^2-10x-12=0; $   |   $-2; -3$   |
|  292.  |   $-x^2-19x-18=0; $   |   $-1; -18$   |
|  293.  |   $15x^2+4x-19=0; $   |   $1; -\dfrac{19}{15}$   |
|  294.  |   $-20x^2+12x+8=0; $   |   $1; -\dfrac{2}{5}$   |
|  295.  |   $9x^2-9x-4=0; $   |   $\dfrac{4}{3}; -\dfrac{1}{3}$   |
|  296.  |   $7x^2-15x+2=0; $   |   $2; \dfrac{1}{7}$   |
|  297.  |   $13x^2-9x-4=0; $   |   $1; -\dfrac{4}{13}$   |
|  298.  |   $4x^2-4x-8=0; $   |   $2; -1$   |
|  299.  |   $-12x^2-15x+5=0; $   |   $\dfrac{-15\pm\sqrt{465}}{24}$   |
|  300.  |   $-6x^2+19x-15=0; $   |   $\dfrac{5}{3}; \dfrac{3}{2}$   |
|  301.  |   $11x^2-17x-10=0; $   |   $2; -\dfrac{5}{11}$   |
|  302.  |   $3x^2-6x+3=0; $   |   $1$   |
|  303.  |   $9x^2-5x+17=0; $   |   $\varnothing$   |
|  304.  |   $12x^2-x-6=0; $   |   $\dfrac{3}{4}; -\dfrac{2}{3}$   |
|  305.  |   $-9x^2+18x+10=0; $   |   $\dfrac{3\pm\sqrt{19}}{3}$   |
|  306.  |   $-12x^2-10x+17=0; $   |   $\dfrac{-5\pm\sqrt{229}}{12}$   |
|  307.  |   $-4x^2+19x-12=0; $   |   $4; \dfrac{3}{4}$   |
|  308.  |   $10x^2+19x+6=0; $   |   $-\dfrac{2}{5}; -\dfrac{3}{2}$   |
|  309.  |   $-17x^2-7x+10=0; $   |   $\dfrac{10}{17}; -1$   |
|  310.  |   $10x^2+12x-2=0; $   |   $\dfrac{-3\pm\sqrt{14}}{5}$   |
|  311.  |   $5x^2+19x+12=0; $   |   $-\dfrac{4}{5}; -3$   |
|  312.  |   $15x^2-8x+9=0; $   |   $\varnothing$   |
|  313.  |   $3x^2+10x-6=0; $   |   $\dfrac{-5\pm\sqrt{43}}{3}$   |
|  314.  |   $2x^2-9x+4=0; $   |   $4; \dfrac{1}{2}$   |
|  315.  |   $-16x^2+3x+14=0; $   |   $\dfrac{3\pm\sqrt{905}}{32}$   |
|  316.  |   $4x^2+13x-17=0; $   |   $1; -\dfrac{17}{4}$   |
|  317.  |   $15x^2+13x-2=0; $   |   $\dfrac{2}{15}; -1$   |
|  318.  |   $-x^2-11x-10=0; $   |   $-1; -10$   |
|  319.  |   $7x^2+10x-17=0; $   |   $1; -\dfrac{17}{7}$   |
|  320.  |   $-8x^2+2x+3=0; $   |   $\dfrac{3}{4}; -\dfrac{1}{2}$   |
|  321.  |   $-3x^2+5x+12=0; $   |   $3; -\dfrac{4}{3}$   |
|  322.  |   $-2x^2+9x-9=0; $   |   $3; \dfrac{3}{2}$   |
|  323.  |   $-4x^2+13x+17=0; $   |   $\dfrac{17}{4}; -1$   |
|  324.  |   $13x^2-2x-1=0; $   |   $\dfrac{1\pm\sqrt{14}}{13}$   |
|  325.  |   $10x^2+17x+3=0; $   |   $-\dfrac{1}{5}; -\dfrac{3}{2}$   |
|  326.  |   $-2x^2-6x+8=0; $   |   $1; -4$   |
|  327.  |   $-x^2-7x-4=0; $   |   $\dfrac{-7\pm\sqrt{33}}{2}$   |
|  328.  |   $16x^2+14x-2=0; $   |   $\dfrac{1}{8}; -1$   |
|  329.  |   $4x^2-18x-6=0; $   |   $\dfrac{9\pm\sqrt{105}}{4}$   |
|  330.  |   $-8x^2-3x+11=0; $   |   $1; -\dfrac{11}{8}$   |
|  331.  |   $18x^2-14x-4=0; $   |   $1; -\dfrac{2}{9}$   |
|  332.  |   $9x^2+3x-1=0; $   |   $\dfrac{-1\pm\sqrt{5}}{6}$   |
|  333.  |   $-5x^2-9x+14=0; $   |   $1; -\dfrac{14}{5}$   |
|  334.  |   $6x^2+3x-3=0; $   |   $\dfrac{1}{2}; -1$   |
|  335.  |   $-18x^2-18x+20=0; $   |   $\dfrac{2}{3}; -\dfrac{5}{3}$   |
|  336.  |   $-16x^2+15x+5=0; $   |   $\dfrac{15\pm\sqrt{545}}{32}$   |
|  337.  |   $2x^2-14x-16=0; $   |   $8; -1$   |
|  338.  |   $11x^2+5x-6=0; $   |   $\dfrac{6}{11}; -1$   |
|  339.  |   $-3x^2-7x+20=0; $   |   $\dfrac{5}{3}; -4$   |
|  340.  |   $15x^2-6x-3=0; $   |   $\dfrac{1\pm\sqrt{6}}{5}$   |
|  341.  |   $-6x^2+10x-13=0; $   |   $\varnothing$   |
|  342.  |   $12x^2+2x-14=0; $   |   $1; -\dfrac{7}{6}$   |
|  343.  |   $-3x^2-7x-4=0; $   |   $-1; -\dfrac{4}{3}$   |
|  344.  |   $-16x^2-14x+11=0; $   |   $\dfrac{1}{2}; -\dfrac{11}{8}$   |
|  345.  |   $-2x^2+11x-19=0; $   |   $\varnothing$   |
|  346.  |   $15x^2-10x-13=0; $   |   $\dfrac{5\pm2\sqrt{55}}{15}$   |
|  347.  |   $10x^2+x-3=0; $   |   $\dfrac{1}{2}; -\dfrac{3}{5}$   |
|  348.  |   $6x^2-8x+2=0; $   |   $1; \dfrac{1}{3}$   |
|  349.  |   $8x^2-4x+14=0; $   |   $\varnothing$   |
|  350.  |   $5x^2+7x-6=0; $   |   $\dfrac{3}{5}; -2$   |
|  351.  |   $-3x^2-5x-13=0; $   |   $\varnothing$   |
|  352.  |   $-8x^2+10x+7=0; $   |   $\dfrac{7}{4}; -\dfrac{1}{2}$   |
|  353.  |   $-20x^2-5x-13=0; $   |   $\varnothing$   |
|  354.  |   $-2x^2-17x+19=0; $   |   $1; -\dfrac{19}{2}$   |
|  355.  |   $4x^2-10x-6=0; $   |   $3; -\dfrac{1}{2}$   |
|  356.  |   $11x^2+3x-14=0; $   |   $1; -\dfrac{14}{11}$   |
|  357.  |   $-13x^2-4x-4=0; $   |   $\varnothing$   |
|  358.  |   $15x^2+3x+6=0; $   |   $\varnothing$   |
|  359.  |   $-7x^2-11x+18=0; $   |   $1; -\dfrac{18}{7}$   |
|  360.  |   $-2x^2+17x+19=0; $   |   $\dfrac{19}{2}; -1$   |
|  361.  |   $20x^2+11x-4=0; $   |   $\dfrac{1}{4}; -\dfrac{4}{5}$   |
|  362.  |   $11x^2-7x-18=0; $   |   $\dfrac{18}{11}; -1$   |
|  363.  |   $-15x^2-4x-18=0; $   |   $\varnothing$   |
|  364.  |   $-2x^2+13x-15=0; $   |   $5; \dfrac{3}{2}$   |
|  365.  |   $-16x^2-15x+7=0; $   |   $\dfrac{-15\pm\sqrt{673}}{32}$   |
|  366.  |   $4x^2-12x-7=0; $   |   $\dfrac{7}{2}; -\dfrac{1}{2}$   |
|  367.  |   $-15x^2-17x+4=0; $   |   $\dfrac{1}{5}; -\dfrac{4}{3}$   |
|  368.  |   $-4x^2-11x-7=0; $   |   $-1; -\dfrac{7}{4}$   |
|  369.  |   $19x^2+6x+16=0; $   |   $\varnothing$   |
|  370.  |   $2x^2+11x-15=0; $   |   $\dfrac{-11\pm\sqrt{241}}{4}$   |
|  371.  |   $-2x^2-13x+12=0; $   |   $\dfrac{-13\pm\sqrt{265}}{4}$   |
|  372.  |   $-3x^2-4x-1=0; $   |   $-\dfrac{1}{3}; -1$   |
|  373.  |   $2x^2-10x+8=0; $   |   $4; 1$   |
|  374.  |   $9x^2+11x-14=0; $   |   $\dfrac{7}{9}; -2$   |
|  375.  |   $-12x^2+4x+20=0; $   |   $\dfrac{1\pm\sqrt{61}}{6}$   |
|  376.  |   $-2x^2-3x+4=0; $   |   $\dfrac{-3\pm\sqrt{41}}{4}$   |
|  377.  |   $14x^2+16x-14=0; $   |   $\dfrac{-4\pm\sqrt{65}}{7}$   |
|  378.  |   $-5x^2-10x+13=0; $   |   $\dfrac{-5\pm3\sqrt{10}}{5}$   |
|  379.  |   $-10x^2+6x+19=0; $   |   $\dfrac{3\pm\sqrt{199}}{10}$   |
|  380.  |   $6x^2-5x+16=0; $   |   $\varnothing$   |
|  381.  |   $-7x^2+14x-16=0; $   |   $\varnothing$   |
|  382.  |   $-8x^2+13x+20=0; $   |   $\dfrac{13\pm\sqrt{809}}{16}$   |
|  383.  |   $3x^2+7x-10=0; $   |   $1; -\dfrac{10}{3}$   |
|  384.  |   $11x^2-18x-6=0; $   |   $\dfrac{9\pm7\sqrt{3}}{11}$   |
|  385.  |   $15x^2-5x+1=0; $   |   $\varnothing$   |
|  386.  |   $-11x^2+3x+8=0; $   |   $1; -\dfrac{8}{11}$   |
|  387.  |   $-13x^2-14x+9=0; $   |   $\dfrac{-7\pm\sqrt{166}}{13}$   |
|  388.  |   $5x^2+16x-16=0; $   |   $\dfrac{4}{5}; -4$   |
|  389.  |   $12x^2-5x-2=0; $   |   $\dfrac{2}{3}; -\dfrac{1}{4}$   |
|  390.  |   $-6x^2-20x+16=0; $   |   $\dfrac{2}{3}; -4$   |
|  391.  |   $-13x^2+6x+3=0; $   |   $\dfrac{3\pm4\sqrt{3}}{13}$   |
|  392.  |   $-16x^2+2x+7=0; $   |   $\dfrac{1\pm\sqrt{113}}{16}$   |
|  393.  |   $3x^2-5x-8=0; $   |   $\dfrac{8}{3}; -1$   |
|  394.  |   $12x^2-10x-12=0; $   |   $\dfrac{3}{2}; -\dfrac{2}{3}$   |
|  395.  |   $-2x^2+19x-9=0; $   |   $9; \dfrac{1}{2}$   |
|  396.  |   $8x^2-14x-4=0; $   |   $2; -\dfrac{1}{4}$   |
|  397.  |   $4x^2-13x+9=0; $   |   $\dfrac{9}{4}; 1$   |
|  398.  |   $-6x^2+11x-4=0; $   |   $\dfrac{4}{3}; \dfrac{1}{2}$   |
|  399.  |   $13x^2+19x+18=0; $   |   $\varnothing$   |
|  400.  |   $3x^2+16x-12=0; $   |   $\dfrac{2}{3}; -6$   |


|   1.   |   $10x^2-3x+9=0; $   |   $\varnothing$   |
|   2.   |   $6x^2-9x-10=0; $   |   $\dfrac{9\pm\sqrt{321}}{12}$   |
|   3.   |   $-7x^2-8x-7=0; $   |   $\varnothing$   |
|   4.   |   $4x^2+8x+4=0; $   |   $-1$   |
|   5.   |   $-9x^2+3x-2=0; $   |   $\varnothing$   |
|   6.   |   $2x^2-10x-8=0; $   |   $\dfrac{5\pm\sqrt{41}}{2}$   |
|   7.   |   $-7x^2+x+8=0; $   |   $\dfrac{8}{7}; -1$   |
|   8.   |   $-9x^2+10x+4=0; $   |   $\dfrac{5\pm\sqrt{61}}{9}$   |
|   9.   |   $-2x^2+2x-3=0; $   |   $\varnothing$   |
|   10.   |   $10x^2-x+9=0; $   |   $\varnothing$   |
|   11.   |   $7x^2+5x-6=0; $   |   $\dfrac{-5\pm\sqrt{193}}{14}$   |
|   12.   |   $5x^2-10x-6=0; $   |   $\dfrac{5\pm\sqrt{55}}{5}$   |
|   13.   |   $-8x^2+9x+5=0; $   |   $\dfrac{9\pm\sqrt{241}}{16}$   |
|   14.   |   $-5x^2+3x-9=0; $   |   $\varnothing$   |
|   15.   |   $-2x^2+7x+4=0; $   |   $4; -\dfrac{1}{2}$   |
|   16.   |   $-6x^2+9x-2=0; $   |   $\dfrac{9\pm\sqrt{33}}{12}$   |
|   17.   |   $x^2-3x-5=0; $   |   $\dfrac{3\pm\sqrt{29}}{2}$   |
|   18.   |   $10x^2-2x-1=0; $   |   $\dfrac{1\pm\sqrt{11}}{10}$   |
|   19.   |   $6x^2-10x-10=0; $   |   $\dfrac{5\pm\sqrt{85}}{6}$   |
|   20.   |   $-9x^2-4x-5=0; $   |   $\varnothing$   |
|   21.   |   $-4x^2+9x-5=0; $   |   $\dfrac{5}{4}; 1$   |
|   22.   |   $-10x^2-7x+1=0; $   |   $\dfrac{-7\pm\sqrt{89}}{20}$   |
|   23.   |   $-8x^2+5x+5=0; $   |   $\dfrac{5\pm\sqrt{185}}{16}$   |
|   24.   |   $-5x^2+3x-1=0; $   |   $\varnothing$   |
|   25.   |   $4x^2-5x-9=0; $   |   $\dfrac{9}{4}; -1$   |
|   26.   |   $-9x^2-5x-9=0; $   |   $\varnothing$   |
|   27.   |   $-x^2-7x+2=0; $   |   $\dfrac{-7\pm\sqrt{57}}{2}$   |
|   28.   |   $6x^2-2x-3=0; $   |   $\dfrac{1\pm\sqrt{19}}{6}$   |
|   29.   |   $8x^2+10x-1=0; $   |   $\dfrac{-5\pm\sqrt{33}}{8}$   |
|   30.   |   $8x^2+3x+4=0; $   |   $\varnothing$   |
|   31.   |   $9x^2-9x+3=0; $   |   $\varnothing$   |
|   32.   |   $-4x^2+9x+9=0; $   |   $3; -\dfrac{3}{4}$   |
|   33.   |   $7x^2+8x+5=0; $   |   $\varnothing$   |
|   34.   |   $-7x^2-6x+9=0; $   |   $\dfrac{-3\pm6\sqrt{2}}{7}$   |
|   35.   |   $x^2+4x-1=0; $   |   $-2\pm\sqrt{5}$   |
|   36.   |   $-2x^2-4x+2=0; $   |   $-1\pm\sqrt{2}$   |
|   37.   |   $5x^2+x-8=0; $   |   $\dfrac{-1\pm\sqrt{161}}{10}$   |
|   38.   |   $-3x^2-8x-2=0; $   |   $\dfrac{-4\pm\sqrt{10}}{3}$   |
|   39.   |   $-2x^2+2x-7=0; $   |   $\varnothing$   |
|   40.   |   $3x^2+7x+2=0; $   |   $-\dfrac{1}{3}; -2$   |
|   41.   |   $-x^2+3x-7=0; $   |   $\varnothing$   |
|   42.   |   $7x^2+9x-4=0; $   |   $\dfrac{-9\pm\sqrt{193}}{14}$   |
|   43.   |   $10x^2+10x+9=0; $   |   $\varnothing$   |
|   44.   |   $7x^2+4x+5=0; $   |   $\varnothing$   |
|   45.   |   $8x^2-4x+8=0; $   |   $\varnothing$   |
|   46.   |   $6x^2+3x-1=0; $   |   $\dfrac{-3\pm\sqrt{33}}{12}$   |
|   47.   |   $3x^2+6x+3=0; $   |   $-1$   |
|   48.   |   $10x^2+10x+4=0; $   |   $\varnothing$   |
|   49.   |   $-9x^2-6x-1=0; $   |   $-\dfrac{1}{3}$   |
|   50.   |   $2x^2+3x-2=0; $   |   $\dfrac{1}{2}; -2$   |
|   51.   |   $-8x^2+3x+7=0; $   |   $\dfrac{3\pm\sqrt{233}}{16}$   |
|   52.   |   $-5x^2+2x+1=0; $   |   $\dfrac{1\pm\sqrt{6}}{5}$   |
|   53.   |   $-5x^2+6x+9=0; $   |   $\dfrac{3\pm3\sqrt{6}}{5}$   |
|   54.   |   $-7x^2+4x+5=0; $   |   $\dfrac{2\pm\sqrt{39}}{7}$   |
|   55.   |   $-x^2-x+4=0; $   |   $\dfrac{-1\pm\sqrt{17}}{2}$   |
|   56.   |   $-9x^2+2x-7=0; $   |   $\varnothing$   |
|   57.   |   $8x^2-7x-4=0; $   |   $\dfrac{7\pm\sqrt{177}}{16}$   |
|   58.   |   $3x^2+6x-4=0; $   |   $\dfrac{-3\pm\sqrt{21}}{3}$   |
|   59.   |   $-4x^2+8x-5=0; $   |   $\varnothing$   |
|   60.   |   $8x^2+5x-7=0; $   |   $\dfrac{-5\pm\sqrt{249}}{16}$   |
|   61.   |   $6x^2+x-1=0; $   |   $\dfrac{1}{3}; -\dfrac{1}{2}$   |
|   62.   |   $6x^2-2x-8=0; $   |   $\dfrac{4}{3}; -1$   |
|   63.   |   $-3x^2+2x+3=0; $   |   $\dfrac{1\pm\sqrt{10}}{3}$   |
|   64.   |   $4x^2+10x+8=0; $   |   $\varnothing$   |
|   65.   |   $8x^2+9x+1=0; $   |   $-\dfrac{1}{8}; -1$   |
|   66.   |   $10x^2+x-8=0; $   |   $\dfrac{-1\pm\sqrt{321}}{20}$   |
|   67.   |   $4x^2+6x+8=0; $   |   $\varnothing$   |
|   68.   |   $-4x^2+7x-3=0; $   |   $1; \dfrac{3}{4}$   |
|   69.   |   $-7x^2+8x-8=0; $   |   $\varnothing$   |
|   70.   |   $-2x^2+3x-5=0; $   |   $\varnothing$   |
|   71.   |   $10x^2-8x-2=0; $   |   $1; -\dfrac{1}{5}$   |
|   72.   |   $-2x^2+3x-2=0; $   |   $\varnothing$   |
|   73.   |   $3x^2-4x-8=0; $   |   $\dfrac{2\pm2\sqrt{7}}{3}$   |
|   74.   |   $-4x^2-3x-1=0; $   |   $\varnothing$   |
|   75.   |   $6x^2-10x+3=0; $   |   $\dfrac{5\pm\sqrt{7}}{6}$   |
|   76.   |   $9x^2-7x-5=0; $   |   $\dfrac{7\pm\sqrt{229}}{18}$   |
|   77.   |   $8x^2-x-6=0; $   |   $\dfrac{1\pm\sqrt{193}}{16}$   |
|   78.   |   $3x^2+3x+6=0; $   |   $\varnothing$   |
|   79.   |   $-8x^2-7x+3=0; $   |   $\dfrac{-7\pm\sqrt{145}}{16}$   |
|   80.   |   $9x^2+7x-6=0; $   |   $\dfrac{-7\pm\sqrt{265}}{18}$   |
|   81.   |   $2x^2+10x+7=0; $   |   $\dfrac{-5\pm\sqrt{11}}{2}$   |
|   82.   |   $2x^2-5x+5=0; $   |   $\varnothing$   |
|   83.   |   $3x^2-10x+10=0; $   |   $\varnothing$   |
|   84.   |   $8x^2-10x+2=0; $   |   $1; \dfrac{1}{4}$   |
|   85.   |   $-5x^2-8x-5=0; $   |   $\varnothing$   |
|   86.   |   $5x^2+9x-4=0; $   |   $\dfrac{-9\pm\sqrt{161}}{10}$   |
|   87.   |   $-4x^2+5x-2=0; $   |   $\varnothing$   |
|   88.   |   $8x^2+x+2=0; $   |   $\varnothing$   |
|   89.   |   $3x^2+5x+4=0; $   |   $\varnothing$   |
|   90.   |   $-7x^2-5x+3=0; $   |   $\dfrac{-5\pm\sqrt{109}}{14}$   |
|   91.   |   $-2x^2-5x-5=0; $   |   $\varnothing$   |
|   92.   |   $6x^2+8x+5=0; $   |   $\varnothing$   |
|   93.   |   $-6x^2-10x+9=0; $   |   $\dfrac{-5\pm\sqrt{79}}{6}$   |
|   94.   |   $5x^2-10x+7=0; $   |   $\varnothing$   |
|   95.   |   $-5x^2-8x+7=0; $   |   $\dfrac{-4\pm\sqrt{51}}{5}$   |
|   96.   |   $-3x^2+9x-3=0; $   |   $\dfrac{3\pm\sqrt{5}}{2}$   |
|   97.   |   $-4x^2-2x-9=0; $   |   $\varnothing$   |
|   98.   |   $4x^2+9x-5=0; $   |   $\dfrac{-9\pm\sqrt{161}}{8}$   |
|   99.   |   $5x^2+10x+1=0; $   |   $\dfrac{-5\pm2\sqrt{5}}{5}$   |
|   100.   |   $6x^2-9x+4=0; $   |   $\varnothing$   |
|   101.   |   $5x^2+6x-2=0; $   |   $\dfrac{-3\pm\sqrt{19}}{5}$   |
|   102.   |   $x^2-9x+4=0; $   |   $\dfrac{9\pm\sqrt{65}}{2}$   |
|   103.   |   $4x^2-x+3=0; $   |   $\varnothing$   |
|   104.   |   $-8x^2-10x+10=0; $   |   $\dfrac{-5\pm\sqrt{105}}{8}$   |
|   105.   |   $-9x^2-x+1=0; $   |   $\dfrac{-1\pm\sqrt{37}}{18}$   |
|   106.   |   $-5x^2-3x-9=0; $   |   $\varnothing$   |
|   107.   |   $3x^2+2x-8=0; $   |   $\dfrac{4}{3}; -2$   |
|   108.   |   $-9x^2+5x-9=0; $   |   $\varnothing$   |
|   109.   |   $-6x^2+4x+5=0; $   |   $\dfrac{2\pm\sqrt{34}}{6}$   |
|   110.   |   $5x^2+10x+4=0; $   |   $\dfrac{-5\pm\sqrt{5}}{5}$   |
|   111.   |   $x^2+5x-3=0; $   |   $\dfrac{-5\pm\sqrt{37}}{2}$   |
|   112.   |   $-6x^2+9x+6=0; $   |   $2; -\dfrac{1}{2}$   |
|   113.   |   $-4x^2+3x-1=0; $   |   $\varnothing$   |
|   114.   |   $-7x^2+7x+9=0; $   |   $\dfrac{7\pm\sqrt{301}}{14}$   |
|   115.   |   $10x^2-4x+9=0; $   |   $\varnothing$   |
|   116.   |   $5x^2-8x-1=0; $   |   $\dfrac{4\pm\sqrt{21}}{5}$   |
|   117.   |   $-10x^2+x+1=0; $   |   $\dfrac{1\pm\sqrt{41}}{20}$   |
|   118.   |   $7x^2-x-2=0; $   |   $\dfrac{1\pm\sqrt{57}}{14}$   |
|   119.   |   $-9x^2+10x+6=0; $   |   $\dfrac{5\pm\sqrt{79}}{9}$   |
|   120.   |   $-3x^2+9x-7=0; $   |   $\varnothing$   |
|   121.   |   $-8x^2+4x+2=0; $   |   $\dfrac{1\pm\sqrt{5}}{4}$   |
|   122.   |   $5x^2+2x+7=0; $   |   $\varnothing$   |
|   123.   |   $6x^2-2x-7=0; $   |   $\dfrac{1\pm\sqrt{43}}{6}$   |
|   124.   |   $x^2-6x+3=0; $   |   $3\pm\sqrt{6}$   |
|   125.   |   $3x^2+2x+8=0; $   |   $\varnothing$   |
|   126.   |   $-5x^2-10x+4=0; $   |   $\dfrac{-5\pm3\sqrt{5}}{5}$   |
|   127.   |   $-5x^2-5x-4=0; $   |   $\varnothing$   |
|   128.   |   $9x^2-8x-3=0; $   |   $\dfrac{4\pm\sqrt{43}}{9}$   |
|   129.   |   $-2x^2-9x+3=0; $   |   $\dfrac{-9\pm\sqrt{105}}{4}$   |
|   130.   |   $7x^2+4x-7=0; $   |   $\dfrac{-2\pm\sqrt{53}}{7}$   |
|   131.   |   $7x^2+6x-1=0; $   |   $\dfrac{1}{7}; -1$   |
|   132.   |   $-3x^2+10x+6=0; $   |   $\dfrac{5\pm\sqrt{43}}{3}$   |
|   133.   |   $-3x^2-7x-3=0; $   |   $\dfrac{-7\pm\sqrt{13}}{6}$   |
|   134.   |   $5x^2-9x+5=0; $   |   $\varnothing$   |
|   135.   |   $3x^2-9x+6=0; $   |   $2; 1$   |
|   136.   |   $10x^2+9x+4=0; $   |   $\varnothing$   |
|   137.   |   $-6x^2+2x+2=0; $   |   $\dfrac{1\pm\sqrt{13}}{6}$   |
|   138.   |   $4x^2+7x-9=0; $   |   $\dfrac{-7\pm\sqrt{193}}{8}$   |
|   139.   |   $x^2+4x-4=0; $   |   $-2\pm2\sqrt{2}$   |
|   140.   |   $5x^2+2x+8=0; $   |   $\varnothing$   |
|   141.   |   $6x^2-9x-4=0; $   |   $\dfrac{9\pm\sqrt{177}}{12}$   |
|   142.   |   $-9x^2+x+9=0; $   |   $\dfrac{1\pm5\sqrt{13}}{18}$   |
|   143.   |   $8x^2+x-8=0; $   |   $\dfrac{-1\pm\sqrt{257}}{16}$   |
|   144.   |   $-6x^2+8x-7=0; $   |   $\varnothing$   |
|   145.   |   $7x^2-7x-1=0; $   |   $\dfrac{7\pm\sqrt{77}}{14}$   |
|   146.   |   $4x^2+2x-1=0; $   |   $\dfrac{-1\pm\sqrt{5}}{4}$   |
|   147.   |   $10x^2-5x-4=0; $   |   $\dfrac{5\pm\sqrt{185}}{20}$   |
|   148.   |   $4x^2-6x-8=0; $   |   $\dfrac{3\pm\sqrt{41}}{4}$   |
|   149.   |   $-2x^2-7x-4=0; $   |   $\dfrac{-7\pm\sqrt{17}}{4}$   |
|   150.   |   $-x^2-2x+2=0; $   |   $-1\pm\sqrt{3}$   |
|   151.   |   $-6x^2-9x-6=0; $   |   $\varnothing$   |
|   152.   |   $-10x^2+3x-4=0; $   |   $\varnothing$   |
|   153.   |   $9x^2+7x-3=0; $   |   $\dfrac{-7\pm\sqrt{157}}{18}$   |
|   154.   |   $5x^2-x-8=0; $   |   $\dfrac{1\pm\sqrt{161}}{10}$   |
|   155.   |   $3x^2-4x+7=0; $   |   $\varnothing$   |
|   156.   |   $-5x^2-9x-7=0; $   |   $\varnothing$   |
|   157.   |   $9x^2-x-1=0; $   |   $\dfrac{1\pm\sqrt{37}}{18}$   |
|   158.   |   $6x^2-9x-2=0; $   |   $\dfrac{9\pm\sqrt{129}}{12}$   |
|   159.   |   $7x^2-10x+8=0; $   |   $\varnothing$   |
|   160.   |   $2x^2-x-3=0; $   |   $\dfrac{3}{2}; -1$   |
|   161.   |   $4x^2+4x-5=0; $   |   $\dfrac{-1\pm\sqrt{6}}{2}$   |
|   162.   |   $-x^2-2x-9=0; $   |   $\varnothing$   |
|   163.   |   $-6x^2-7x-8=0; $   |   $\varnothing$   |
|   164.   |   $-10x^2-10x+7=0; $   |   $\dfrac{-5\pm\sqrt{95}}{10}$   |
|   165.   |   $-10x^2-2x-2=0; $   |   $\varnothing$   |
|   166.   |   $-x^2+10x+5=0; $   |   $5\pm\sqrt{30}$   |
|   167.   |   $-6x^2+x+8=0; $   |   $\dfrac{1\pm\sqrt{193}}{12}$   |
|   168.   |   $x^2+5x+4=0; $   |   $-1; -4$   |
|   169.   |   $9x^2-9x+1=0; $   |   $\dfrac{3\pm\sqrt{5}}{6}$   |
|   170.   |   $-4x^2-6x-10=0; $   |   $\varnothing$   |
|   171.   |   $4x^2-10x+6=0; $   |   $\dfrac{3}{2}; 1$   |
|   172.   |   $2x^2-8x-6=0; $   |   $2\pm\sqrt{7}$   |
|   173.   |   $4x^2+8x-5=0; $   |   $\dfrac{1}{2}; -\dfrac{5}{2}$   |
|   174.   |   $-x^2+9x+10=0; $   |   $10; -1$   |
|   175.   |   $8x^2-4x-3=0; $   |   $\dfrac{1\pm\sqrt{7}}{4}$   |
|   176.   |   $2x^2+2x+10=0; $   |   $\varnothing$   |
|   177.   |   $8x^2-8x-8=0; $   |   $\dfrac{1\pm\sqrt{5}}{2}$   |
|   178.   |   $-2x^2-10x+10=0; $   |   $\dfrac{-5\pm3\sqrt{5}}{2}$   |
|   179.   |   $2x^2+6x-8=0; $   |   $1; -4$   |
|   180.   |   $-3x^2-10x+5=0; $   |   $\dfrac{-5\pm2\sqrt{10}}{3}$   |
|   181.   |   $5x^2+2x+9=0; $   |   $\varnothing$   |
|   182.   |   $9x^2+6x+4=0; $   |   $\varnothing$   |
|   183.   |   $10x^2-x-3=0; $   |   $\dfrac{3}{5}; -\dfrac{1}{2}$   |
|   184.   |   $-3x^2-10x-8=0; $   |   $-\dfrac{4}{3}; -2$   |
|   185.   |   $-x^2-5x-1=0; $   |   $\dfrac{-5\pm\sqrt{21}}{2}$   |
|   186.   |   $8x^2-x+10=0; $   |   $\varnothing$   |
|   187.   |   $5x^2+7x+10=0; $   |   $\varnothing$   |
|   188.   |   $3x^2-9x+3=0; $   |   $\dfrac{3\pm\sqrt{5}}{2}$   |
|   189.   |   $-2x^2-3x-9=0; $   |   $\varnothing$   |
|   190.   |   $3x^2+6x+3=0; $   |   $-1$   |
|   191.   |   $9x^2+6x-4=0; $   |   $\dfrac{-1\pm\sqrt{5}}{3}$   |
|   192.   |   $-4x^2-6x+7=0; $   |   $\dfrac{-3\pm\sqrt{37}}{4}$   |
|   193.   |   $x^2-2x-6=0; $   |   $1\pm\sqrt{7}$   |
|   194.   |   $-7x^2-10x-8=0; $   |   $\varnothing$   |
|   195.   |   $-x^2-6x-2=0; $   |   $-3\pm\sqrt{7}$   |
|   196.   |   $4x^2-x-6=0; $   |   $\dfrac{1\pm\sqrt{97}}{8}$   |
|   197.   |   $-2x^2-8x+1=0; $   |   $\dfrac{-4\pm3\sqrt{2}}{2}$   |
|   198.   |   $-10x^2-4x-4=0; $   |   $\varnothing$   |
|   199.   |   $-3x^2+9x+7=0; $   |   $\dfrac{9\pm\sqrt{165}}{6}$   |
|   200.   |   $9x^2-9x-3=0; $   |   $\dfrac{3\pm\sqrt{21}}{6}$   |
|   201.   |   $5x^2-5x+4=0; $   |   $\varnothing$   |
|   202.   |   $-3x^2-2x-8=0; $   |   $\varnothing$   |
|   203.   |   $7x^2-x+3=0; $   |   $\varnothing$   |
|   204.   |   $10x^2-10x-7=0; $   |   $\dfrac{5\pm\sqrt{95}}{10}$   |
|   205.   |   $-5x^2+9x+6=0; $   |   $\dfrac{9\pm\sqrt{201}}{10}$   |
|   206.   |   $-5x^2+x+9=0; $   |   $\dfrac{1\pm\sqrt{181}}{10}$   |
|   207.   |   $7x^2+10x+9=0; $   |   $\varnothing$   |
|   208.   |   $-9x^2-5x-10=0; $   |   $\varnothing$   |
|   209.   |   $-2x^2-6x+4=0; $   |   $\dfrac{-3\pm\sqrt{17}}{2}$   |
|   210.   |   $3x^2-6x+6=0; $   |   $\varnothing$   |
|   211.   |   $x^2+x-1=0; $   |   $\dfrac{-1\pm\sqrt{5}}{2}$   |
|   212.   |   $-7x^2+9x-9=0; $   |   $\varnothing$   |
|   213.   |   $7x^2-8x+9=0; $   |   $\varnothing$   |
|   214.   |   $-8x^2-x-2=0; $   |   $\varnothing$   |
|   215.   |   $9x^2-6x-2=0; $   |   $\dfrac{1\pm\sqrt{3}}{3}$   |
|   216.   |   $10x^2+7x-8=0; $   |   $\dfrac{-7\pm3\sqrt{41}}{20}$   |
|   217.   |   $4x^2-7x+4=0; $   |   $\varnothing$   |
|   218.   |   $9x^2-7x+4=0; $   |   $\varnothing$   |
|   219.   |   $x^2-2x-8=0; $   |   $4; -2$   |
|   220.   |   $x^2+x-3=0; $   |   $\dfrac{-1\pm\sqrt{13}}{2}$   |
|   221.   |   $8x^2-10x-5=0; $   |   $\dfrac{5\pm\sqrt{65}}{8}$   |
|   222.   |   $5x^2+x+9=0; $   |   $\varnothing$   |
|   223.   |   $-7x^2+5x-3=0; $   |   $\varnothing$   |
|   224.   |   $9x^2-5x+6=0; $   |   $\varnothing$   |
|   225.   |   $3x^2-3x+7=0; $   |   $\varnothing$   |
|   226.   |   $9x^2+2x+8=0; $   |   $\varnothing$   |
|   227.   |   $4x^2-5x-9=0; $   |   $\dfrac{9}{4}; -1$   |
|   228.   |   $10x^2+3x+8=0; $   |   $\varnothing$   |
|   229.   |   $-8x^2+10x-1=0; $   |   $\dfrac{5\pm\sqrt{17}}{8}$   |
|   230.   |   $-8x^2-10x+8=0; $   |   $\dfrac{-5\pm\sqrt{89}}{8}$   |
|   231.   |   $-2x^2-8x+8=0; $   |   $-2\pm2\sqrt{2}$   |
|   232.   |   $3x^2-9x+10=0; $   |   $\varnothing$   |
|   233.   |   $8x^2-5x-10=0; $   |   $\dfrac{5\pm\sqrt{345}}{16}$   |
|   234.   |   $8x^2-3x-3=0; $   |   $\dfrac{3\pm\sqrt{105}}{16}$   |
|   235.   |   $-8x^2-9x+2=0; $   |   $\dfrac{-9\pm\sqrt{145}}{16}$   |
|   236.   |   $3x^2+7x-7=0; $   |   $\dfrac{-7\pm\sqrt{133}}{6}$   |
|   237.   |   $2x^2+4x+7=0; $   |   $\varnothing$   |
|   238.   |   $-5x^2-2x+4=0; $   |   $\dfrac{-1\pm\sqrt{21}}{5}$   |
|   239.   |   $3x^2-2x+9=0; $   |   $\varnothing$   |
|   240.   |   $-8x^2-10x-8=0; $   |   $\varnothing$   |
|   241.   |   $8x^2+2x-6=0; $   |   $\dfrac{3}{4}; -1$   |
|   242.   |   $2x^2+5x-10=0; $   |   $\dfrac{-5\pm\sqrt{105}}{4}$   |
|   243.   |   $-9x^2-10x-7=0; $   |   $\varnothing$   |
|   244.   |   $-6x^2-10x+3=0; $   |   $\dfrac{-5\pm\sqrt{43}}{6}$   |
|   245.   |   $8x^2+x-7=0; $   |   $\dfrac{7}{8}; -1$   |
|   246.   |   $-6x^2+7x-9=0; $   |   $\varnothing$   |
|   247.   |   $-5x^2-5x+8=0; $   |   $\dfrac{-5\pm\sqrt{185}}{10}$   |
|   248.   |   $10x^2-6x-7=0; $   |   $\dfrac{3\pm\sqrt{79}}{10}$   |
|   249.   |   $3x^2-6x-10=0; $   |   $\dfrac{3\pm\sqrt{39}}{3}$   |
|   250.   |   $6x^2+4x+3=0; $   |   $\varnothing$   |
|   251.   |   $x^2+9x+9=0; $   |   $\dfrac{-9\pm3\sqrt{5}}{2}$   |
|   252.   |   $-4x^2+3x+10=0; $   |   $2; -\dfrac{5}{4}$   |
|   253.   |   $8x^2+5x+4=0; $   |   $\varnothing$   |
|   254.   |   $x^2-2x-3=0; $   |   $3; -1$   |
|   255.   |   $-10x^2-4x+5=0; $   |   $\dfrac{-2\pm3\sqrt{6}}{10}$   |
|   256.   |   $x^2+3x-7=0; $   |   $\dfrac{-3\pm\sqrt{37}}{2}$   |
|   257.   |   $10x^2-6x+6=0; $   |   $\varnothing$   |
|   258.   |   $7x^2-6x+3=0; $   |   $\varnothing$   |
|   259.   |   $3x^2-2x-4=0; $   |   $\dfrac{1\pm\sqrt{13}}{3}$   |
|   260.   |   $8x^2-8x+4=0; $   |   $\varnothing$   |
|   261.   |   $-9x^2-2x-8=0; $   |   $\varnothing$   |
|   262.   |   $4x^2+9x+4=0; $   |   $\dfrac{-9\pm\sqrt{17}}{8}$   |
|   263.   |   $8x^2-3x+5=0; $   |   $\varnothing$   |
|   264.   |   $-4x^2+7x-2=0; $   |   $\dfrac{7\pm\sqrt{17}}{8}$   |
|   265.   |   $-5x^2-5x-8=0; $   |   $\varnothing$   |
|   266.   |   $x^2+4x-3=0; $   |   $-2\pm\sqrt{7}$   |
|   267.   |   $-x^2-3x-4=0; $   |   $\varnothing$   |
|   268.   |   $-7x^2-6x-8=0; $   |   $\varnothing$   |
|   269.   |   $-9x^2+9x+9=0; $   |   $\dfrac{1\pm\sqrt{5}}{2}$   |
|   270.   |   $-2x^2+5x+7=0; $   |   $\dfrac{7}{2}; -1$   |
|   271.   |   $-2x^2+3x-3=0; $   |   $\varnothing$   |
|   272.   |   $10x^2+9x-4=0; $   |   $\dfrac{-9\pm\sqrt{241}}{20}$   |
|   273.   |   $6x^2-5x-9=0; $   |   $\dfrac{5\pm\sqrt{241}}{12}$   |
|   274.   |   $10x^2+6x+6=0; $   |   $\varnothing$   |
|   275.   |   $-8x^2+2x+7=0; $   |   $\dfrac{1\pm\sqrt{57}}{8}$   |
|   276.   |   $-6x^2-6x-6=0; $   |   $\varnothing$   |
|   277.   |   $3x^2-8x+7=0; $   |   $\varnothing$   |
|   278.   |   $x^2-x-5=0; $   |   $\dfrac{1\pm\sqrt{21}}{2}$   |
|   279.   |   $-x^2+7x+9=0; $   |   $\dfrac{7\pm\sqrt{85}}{2}$   |
|   280.   |   $-6x^2-x+3=0; $   |   $\dfrac{-1\pm\sqrt{73}}{12}$   |
|   281.   |   $3x^2+7x-9=0; $   |   $\dfrac{-7\pm\sqrt{157}}{6}$   |
|   282.   |   $5x^2-10x-4=0; $   |   $\dfrac{5\pm3\sqrt{5}}{5}$   |
|   283.   |   $3x^2-x+5=0; $   |   $\varnothing$   |
|   284.   |   $3x^2-7x-2=0; $   |   $\dfrac{7\pm\sqrt{73}}{6}$   |
|   285.   |   $-6x^2+9x-1=0; $   |   $\dfrac{9\pm\sqrt{57}}{12}$   |
|   286.   |   $-5x^2+2x-9=0; $   |   $\varnothing$   |
|   287.   |   $-10x^2+2x+2=0; $   |   $\dfrac{1\pm\sqrt{21}}{10}$   |
|   288.   |   $-6x^2-10x-5=0; $   |   $\varnothing$   |
|   289.   |   $x^2-7x+6=0; $   |   $6; 1$   |
|   290.   |   $8x^2+5x-2=0; $   |   $\dfrac{-5\pm\sqrt{89}}{16}$   |
|   291.   |   $2x^2-x-10=0; $   |   $\dfrac{5}{2}; -2$   |
|   292.   |   $8x^2+8x+3=0; $   |   $\varnothing$   |
|   293.   |   $-9x^2+5x+7=0; $   |   $\dfrac{5\pm\sqrt{277}}{18}$   |
|   294.   |   $x^2-9x-4=0; $   |   $\dfrac{9\pm\sqrt{97}}{2}$   |
|   295.   |   $-5x^2+9x+5=0; $   |   $\dfrac{9\pm\sqrt{181}}{10}$   |
|   296.   |   $-x^2-10x-9=0; $   |   $-1; -9$   |
|   297.   |   $2x^2-10x-10=0; $   |   $\dfrac{5\pm3\sqrt{5}}{2}$   |
|   298.   |   $-10x^2+x+1=0; $   |   $\dfrac{1\pm\sqrt{41}}{20}$   |
|   299.   |   $-7x^2+9x+2=0; $   |   $\dfrac{9\pm\sqrt{137}}{14}$   |
|   300.   |   $7x^2+2x+4=0; $   |   $\varnothing$   |
|   301.   |   $10x^2-x-10=0; $   |   $\dfrac{1\pm\sqrt{401}}{20}$   |
|   302.   |   $3x^2-6x+6=0; $   |   $\varnothing$   |
|   303.   |   $-10x^2+x-8=0; $   |   $\varnothing$   |
|   304.   |   $-9x^2-9x-1=0; $   |   $\dfrac{-3\pm\sqrt{5}}{6}$   |
|   305.   |   $-9x^2+2x-2=0; $   |   $\varnothing$   |
|   306.   |   $4x^2-5x-2=0; $   |   $\dfrac{5\pm\sqrt{57}}{8}$   |
|   307.   |   $x^2+8x+5=0; $   |   $-4\pm\sqrt{11}$   |
|   308.   |   $-4x^2-3x-8=0; $   |   $\varnothing$   |
|   309.   |   $-10x^2-9x-8=0; $   |   $\varnothing$   |
|   310.   |   $5x^2+7x+8=0; $   |   $\varnothing$   |
|   311.   |   $-8x^2-x-10=0; $   |   $\varnothing$   |
|   312.   |   $6x^2+x-2=0; $   |   $\dfrac{1}{2}; -\dfrac{2}{3}$   |
|   313.   |   $8x^2-2x-4=0; $   |   $\dfrac{1\pm\sqrt{33}}{8}$   |
|   314.   |   $-x^2-10x+6=0; $   |   $-5\pm\sqrt{31}$   |
|   315.   |   $-7x^2-10x-9=0; $   |   $\varnothing$   |
|   316.   |   $8x^2+2x+6=0; $   |   $\varnothing$   |
|   317.   |   $x^2-6x+7=0; $   |   $3\pm\sqrt{2}$   |
|   318.   |   $-6x^2-7x+1=0; $   |   $\dfrac{-7\pm\sqrt{73}}{12}$   |
|   319.   |   $-10x^2-7x-5=0; $   |   $\varnothing$   |
|   320.   |   $-3x^2-8x+4=0; $   |   $\dfrac{-4\pm2\sqrt{7}}{3}$   |
|   321.   |   $-8x^2-5x-1=0; $   |   $\varnothing$   |
|   322.   |   $3x^2-6x-1=0; $   |   $\dfrac{3\pm2\sqrt{3}}{3}$   |
|   323.   |   $3x^2+10x-1=0; $   |   $\dfrac{-5\pm2\sqrt{7}}{3}$   |
|   324.   |   $-5x^2-7x+5=0; $   |   $\dfrac{-7\pm\sqrt{149}}{10}$   |
|   325.   |   $2x^2+5x+4=0; $   |   $\varnothing$   |
|   326.   |   $10x^2-7x-3=0; $   |   $1; -\dfrac{3}{10}$   |
|   327.   |   $-5x^2+9x+10=0; $   |   $\dfrac{9\pm\sqrt{281}}{10}$   |
|   328.   |   $-10x^2+x-9=0; $   |   $\varnothing$   |
|   329.   |   $4x^2+5x+8=0; $   |   $\varnothing$   |
|   330.   |   $6x^2+3x+1=0; $   |   $\varnothing$   |
|   331.   |   $4x^2-7x+9=0; $   |   $\varnothing$   |
|   332.   |   $9x^2+5x+3=0; $   |   $\varnothing$   |
|   333.   |   $4x^2+6x+3=0; $   |   $\varnothing$   |
|   334.   |   $-4x^2-7x+6=0; $   |   $\dfrac{-7\pm\sqrt{145}}{8}$   |
|   335.   |   $-8x^2-x+9=0; $   |   $1; -\dfrac{9}{8}$   |
|   336.   |   $10x^2-10x-7=0; $   |   $\dfrac{5\pm\sqrt{95}}{10}$   |
|   337.   |   $-2x^2+4x+10=0; $   |   $1\pm\sqrt{6}$   |
|   338.   |   $4x^2-8x+8=0; $   |   $\varnothing$   |
|   339.   |   $-9x^2+6x+1=0; $   |   $\dfrac{1\pm\sqrt{2}}{3}$   |
|   340.   |   $7x^2-3x+2=0; $   |   $\varnothing$   |
|   341.   |   $-3x^2-5x+4=0; $   |   $\dfrac{-5\pm\sqrt{73}}{6}$   |
|   342.   |   $-9x^2-5x-2=0; $   |   $\varnothing$   |
|   343.   |   $3x^2+x-3=0; $   |   $\dfrac{-1\pm\sqrt{37}}{6}$   |
|   344.   |   $-3x^2+8x-10=0; $   |   $\varnothing$   |
|   345.   |   $-9x^2+4x-6=0; $   |   $\varnothing$   |
|   346.   |   $-2x^2-10x-10=0; $   |   $\dfrac{-5\pm\sqrt{5}}{2}$   |
|   347.   |   $3x^2-10x-4=0; $   |   $\dfrac{5\pm\sqrt{37}}{3}$   |
|   348.   |   $-10x^2+6x-6=0; $   |   $\varnothing$   |
|   349.   |   $4x^2+2x+2=0; $   |   $\varnothing$   |
|   350.   |   $-4x^2+10x-3=0; $   |   $\dfrac{5\pm\sqrt{13}}{4}$   |
|   351.   |   $2x^2+2x-2=0; $   |   $\dfrac{-1\pm\sqrt{5}}{2}$   |
|   352.   |   $10x^2+x-7=0; $   |   $\dfrac{-1\pm\sqrt{281}}{20}$   |
|   353.   |   $-4x^2+3x+8=0; $   |   $\dfrac{3\pm\sqrt{137}}{8}$   |
|   354.   |   $3x^2-3x+8=0; $   |   $\varnothing$   |
|   355.   |   $-6x^2+2x+2=0; $   |   $\dfrac{1\pm\sqrt{13}}{6}$   |
|   356.   |   $-9x^2+2x+5=0; $   |   $\dfrac{1\pm\sqrt{46}}{9}$   |
|   357.   |   $10x^2+4x+4=0; $   |   $\varnothing$   |
|   358.   |   $x^2-2x+7=0; $   |   $\varnothing$   |
|   359.   |   $6x^2+4x+9=0; $   |   $\varnothing$   |
|   360.   |   $x^2-7x-1=0; $   |   $\dfrac{7\pm\sqrt{53}}{2}$   |
|   361.   |   $-6x^2+7x-4=0; $   |   $\varnothing$   |
|   362.   |   $10x^2+2x+8=0; $   |   $\varnothing$   |
|   363.   |   $-7x^2-8x-3=0; $   |   $\varnothing$   |
|   364.   |   $9x^2-5x-4=0; $   |   $1; -\dfrac{4}{9}$   |
|   365.   |   $-6x^2+x+10=0; $   |   $\dfrac{1\pm\sqrt{241}}{12}$   |
|   366.   |   $3x^2-7x+8=0; $   |   $\varnothing$   |
|   367.   |   $-4x^2+x-7=0; $   |   $\varnothing$   |
|   368.   |   $-3x^2+5x+4=0; $   |   $\dfrac{5\pm\sqrt{73}}{6}$   |
|   369.   |   $-8x^2-5x+3=0; $   |   $\dfrac{3}{8}; -1$   |
|   370.   |   $6x^2+4x-4=0; $   |   $\dfrac{-1\pm\sqrt{7}}{3}$   |
|   371.   |   $7x^2+4x+9=0; $   |   $\varnothing$   |
|   372.   |   $-3x^2-5x-7=0; $   |   $\varnothing$   |
|   373.   |   $x^2+8x+8=0; $   |   $-4\pm2\sqrt{2}$   |
|   374.   |   $7x^2-3x-2=0; $   |   $\dfrac{3\pm\sqrt{65}}{14}$   |
|   375.   |   $-9x^2+10x-10=0; $   |   $\varnothing$   |
|   376.   |   $-9x^2+10x+1=0; $   |   $\dfrac{5\pm\sqrt{34}}{9}$   |
|   377.   |   $5x^2+8x+1=0; $   |   $\dfrac{-4\pm\sqrt{11}}{5}$   |
|   378.   |   $-6x^2-6x-10=0; $   |   $\varnothing$   |
|   379.   |   $-5x^2-7x+7=0; $   |   $\dfrac{-7\pm3\sqrt{21}}{10}$   |
|   380.   |   $-x^2-10x-4=0; $   |   $-5\pm\sqrt{21}$   |
|   381.   |   $-2x^2+6x-10=0; $   |   $\varnothing$   |
|   382.   |   $-6x^2-6x+10=0; $   |   $\dfrac{-3\pm\sqrt{69}}{6}$   |
|   383.   |   $4x^2-6x+3=0; $   |   $\varnothing$   |
|   384.   |   $5x^2-3x-7=0; $   |   $\dfrac{3\pm\sqrt{149}}{10}$   |
|   385.   |   $10x^2-6x+8=0; $   |   $\varnothing$   |
|   386.   |   $-7x^2+3x+6=0; $   |   $\dfrac{3\pm\sqrt{177}}{14}$   |
|   387.   |   $5x^2+2x-3=0; $   |   $\dfrac{3}{5}; -1$   |
|   388.   |   $10x^2-6x+8=0; $   |   $\varnothing$   |
|   389.   |   $-2x^2+6x-4=0; $   |   $2; 1$   |
|   390.   |   $9x^2-10x+8=0; $   |   $\varnothing$   |
|   391.   |   $-4x^2-10x-7=0; $   |   $\varnothing$   |
|   392.   |   $-8x^2-3x+7=0; $   |   $\dfrac{-3\pm\sqrt{233}}{16}$   |
|   393.   |   $6x^2-3x+4=0; $   |   $\varnothing$   |
|   394.   |   $-4x^2-9x-9=0; $   |   $\varnothing$   |
|   395.   |   $-3x^2+6x+8=0; $   |   $\dfrac{3\pm\sqrt{33}}{3}$   |
|   396.   |   $3x^2-6x-9=0; $   |   $3; -1$   |
|   397.   |   $-9x^2-4x-10=0; $   |   $\varnothing$   |
|   398.   |   $-2x^2-8x-10=0; $   |   $\varnothing$   |
|   399.   |   $3x^2+3x-9=0; $   |   $\dfrac{-1\pm\sqrt{13}}{2}$   |
|   400.   |   $2x^2-9x-2=0; $   |   $\dfrac{9\pm\sqrt{97}}{4}$   |