| 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; $ | $\dfrac{9\pm\sqrt{97}}{4}$ |