| 1. | $-169x^2+208x-64=0; $ | $\dfrac{8}{13}$ |
| 2. | $-225x^2+60x-4=0; $ | $\dfrac{2}{15}$ |
| 3. | $169x^2+26x+1=0; $ | $-\dfrac{1}{13}$ |
| 4. | $-81x^2+72x-16=0; $ | $\dfrac{4}{9}$ |
| 5. | $-16x^2+136x-289=0; $ | $\dfrac{17}{4}$ |
| 6. | $-36x^2+12x-1=0; $ | $\dfrac{1}{6}$ |
| 7. | $-64x^2+64x-16=0; $ | $\dfrac{1}{2}$ |
| 8. | $4x^2+72x+324=0; $ | $-9$ |
| 9. | $169x^2+156x+36=0; $ | $-\dfrac{6}{13}$ |
| 10. | $121x^2+374x+289=0; $ | $-\dfrac{17}{11}$ |
| 11. | $-25x^2+150x-225=0; $ | $3$ |
| 12. | $-400x^2+360x-81=0; $ | $\dfrac{9}{20}$ |
| 13. | $-169x^2+416x-256=0; $ | $\dfrac{16}{13}$ |
| 14. | $256x^2+512x+256=0; $ | $-1$ |
| 15. | $-9x^2+6x-1=0; $ | $\dfrac{1}{3}$ |
| 16. | $256x^2+288x+81=0; $ | $-\dfrac{9}{16}$ |
| 17. | $-144x^2+192x-64=0; $ | $\dfrac{2}{3}$ |
| 18. | $4x^2+28x+49=0; $ | $-\dfrac{7}{2}$ |
| 19. | $-324x^2+72x-4=0; $ | $\dfrac{1}{9}$ |
| 20. | $25x^2+170x+289=0; $ | $-\dfrac{17}{5}$ |
| 21. | $81x^2+126x+49=0; $ | $-\dfrac{7}{9}$ |
| 22. | $-81x^2+162x-81=0; $ | $1$ |
| 23. | $-225x^2+540x-324=0; $ | $\dfrac{6}{5}$ |
| 24. | $-49x^2+14x-1=0; $ | $\dfrac{1}{7}$ |
| 25. | $-400x^2+600x-225=0; $ | $\dfrac{3}{4}$ |
| 26. | $-9x^2+42x-49=0; $ | $\dfrac{7}{3}$ |
| 27. | $-121x^2+352x-256=0; $ | $\dfrac{16}{11}$ |
| 28. | $-81x^2+252x-196=0; $ | $\dfrac{14}{9}$ |
| 29. | $81x^2+54x+9=0; $ | $-\dfrac{1}{3}$ |
| 30. | $25x^2+100x+100=0; $ | $-2$ |
| 31. | $361x^2+152x+16=0; $ | $-\dfrac{4}{19}$ |
| 32. | $324x^2+576x+256=0; $ | $-\dfrac{8}{9}$ |
| 33. | $-36x^2+108x-81=0; $ | $\dfrac{3}{2}$ |
| 34. | $-196x^2+420x-225=0; $ | $\dfrac{15}{14}$ |
| 35. | $x^2+40x+400=0; $ | $-20$ |
| 36. | $196x^2+112x+16=0; $ | $-\dfrac{2}{7}$ |
| 37. | $9x^2+120x+400=0; $ | $-\dfrac{20}{3}$ |
| 38. | $-361x^2+380x-100=0; $ | $\dfrac{10}{19}$ |
| 39. | $169x^2+286x+121=0; $ | $-\dfrac{11}{13}$ |
| 40. | $100x^2+160x+64=0; $ | $-\dfrac{4}{5}$ |
| 41. | $-4x^2+56x-196=0; $ | $7$ |
| 42. | $49x^2+112x+64=0; $ | $-\dfrac{8}{7}$ |
| 43. | $36x^2+156x+169=0; $ | $-\dfrac{13}{6}$ |
| 44. | $-81x^2+216x-144=0; $ | $\dfrac{4}{3}$ |
| 45. | $-361x^2+570x-225=0; $ | $\dfrac{15}{19}$ |
| 46. | $400x^2+600x+225=0; $ | $-\dfrac{3}{4}$ |
| 47. | $-36x^2+180x-225=0; $ | $\dfrac{5}{2}$ |
| 48. | $361x^2+646x+289=0; $ | $-\dfrac{17}{19}$ |
| 49. | $64x^2+32x+4=0; $ | $-\dfrac{1}{4}$ |
| 50. | $-361x^2+114x-9=0; $ | $\dfrac{3}{19}$ |
| 51. | $-225x^2+90x-9=0; $ | $\dfrac{1}{5}$ |
| 52. | $-100x^2+120x-36=0; $ | $\dfrac{3}{5}$ |
| 53. | $256x^2+192x+36=0; $ | $-\dfrac{3}{8}$ |
| 54. | $324x^2+540x+225=0; $ | $-\dfrac{5}{6}$ |
| 55. | $-16x^2+72x-81=0; $ | $\dfrac{9}{4}$ |
| 56. | $-64x^2+80x-25=0; $ | $\dfrac{5}{8}$ |
| 57. | $-x^2+24x-144=0; $ | $12$ |
| 58. | $-225x^2+240x-64=0; $ | $\dfrac{8}{15}$ |
| 59. | $-x^2+10x-25=0; $ | $5$ |
| 60. | $400x^2+240x+36=0; $ | $-\dfrac{3}{10}$ |
| 61. | $121x^2+220x+100=0; $ | $-\dfrac{10}{11}$ |
| 62. | $-289x^2+34x-1=0; $ | $\dfrac{1}{17}$ |
| 63. | $100x^2+80x+16=0; $ | $-\dfrac{2}{5}$ |
| 64. | $324x^2+288x+64=0; $ | $-\dfrac{4}{9}$ |
| 65. | $-121x^2+308x-196=0; $ | $\dfrac{14}{11}$ |
| 66. | $-9x^2+72x-144=0; $ | $4$ |
| 67. | $196x^2+56x+4=0; $ | $-\dfrac{1}{7}$ |
| 68. | $16x^2+120x+225=0; $ | $-\dfrac{15}{4}$ |
| 69. | $196x^2+168x+36=0; $ | $-\dfrac{3}{7}$ |
| 70. | $-400x^2+80x-4=0; $ | $\dfrac{1}{10}$ |
| 71. | $-49x^2+238x-289=0; $ | $\dfrac{17}{7}$ |
| 72. | $-400x^2+720x-324=0; $ | $\dfrac{9}{10}$ |
| 73. | $256x^2+96x+9=0; $ | $-\dfrac{3}{16}$ |
| 74. | $-256x^2+480x-225=0; $ | $\dfrac{15}{16}$ |
| 75. | $400x^2+480x+144=0; $ | $-\dfrac{3}{5}$ |
| 76. | $9x^2+84x+196=0; $ | $-\dfrac{14}{3}$ |
| 77. | $-100x^2+320x-256=0; $ | $\dfrac{8}{5}$ |
| 78. | $-9x^2+108x-324=0; $ | $6$ |
| 79. | $-361x^2+228x-36=0; $ | $\dfrac{6}{19}$ |
| 80. | $-144x^2+24x-1=0; $ | $\dfrac{1}{12}$ |
| 81. | $25x^2+80x+64=0; $ | $-\dfrac{8}{5}$ |
| 82. | $64x^2+272x+289=0; $ | $-\dfrac{17}{8}$ |
| 83. | $-x^2+26x-169=0; $ | $13$ |
| 84. | $-64x^2+256x-256=0; $ | $2$ |
| 85. | $-289x^2+510x-225=0; $ | $\dfrac{15}{17}$ |
| 86. | $-169x^2+468x-324=0; $ | $\dfrac{18}{13}$ |
| 87. | $-324x^2+504x-196=0; $ | $\dfrac{7}{9}$ |
| 88. | $324x^2+468x+169=0; $ | $-\dfrac{13}{18}$ |
| 89. | $144x^2+336x+196=0; $ | $-\dfrac{7}{6}$ |
| 90. | $256x^2+448x+196=0; $ | $-\dfrac{7}{8}$ |
| 91. | $9x^2+30x+25=0; $ | $-\dfrac{5}{3}$ |
| 92. | $9x^2+108x+324=0; $ | $-6$ |
| 93. | $-81x^2+306x-289=0; $ | $\dfrac{17}{9}$ |
| 94. | $144x^2+48x+4=0; $ | $-\dfrac{1}{6}$ |
| 95. | $-256x^2+576x-324=0; $ | $\dfrac{9}{8}$ |
| 96. | $25x^2+110x+121=0; $ | $-\dfrac{11}{5}$ |
| 97. | $289x^2+612x+324=0; $ | $-\dfrac{18}{17}$ |
| 98. | $-4x^2+68x-289=0; $ | $\dfrac{17}{2}$ |
| 99. | $256x^2+480x+225=0; $ | $-\dfrac{15}{16}$ |
| 100. | $144x^2+432x+324=0; $ | $-\dfrac{3}{2}$ |
| 101. | $-100x^2+220x-121=0; $ | $\dfrac{11}{10}$ |
| 102. | $-64x^2+160x-100=0; $ | $\dfrac{5}{4}$ |
| 103. | $-x^2+40x-400=0; $ | $20$ |
| 104. | $4x^2+24x+36=0; $ | $-3$ |
| 105. | $144x^2+120x+25=0; $ | $-\dfrac{5}{12}$ |
| 106. | $-49x^2+266x-361=0; $ | $\dfrac{19}{7}$ |
| 107. | $289x^2+544x+256=0; $ | $-\dfrac{16}{17}$ |
| 108. | $-169x^2+312x-144=0; $ | $\dfrac{12}{13}$ |
| 109. | $169x^2+260x+100=0; $ | $-\dfrac{10}{13}$ |
| 110. | $-400x^2+120x-9=0; $ | $\dfrac{3}{20}$ |
| 111. | $400x^2+120x+9=0; $ | $-\dfrac{3}{20}$ |
| 112. | $121x^2+22x+1=0; $ | $-\dfrac{1}{11}$ |
| 113. | $-100x^2+140x-49=0; $ | $\dfrac{7}{10}$ |
| 114. | $x^2+24x+144=0; $ | $-12$ |
| 115. | $-289x^2+646x-361=0; $ | $\dfrac{19}{17}$ |
| 116. | $x^2+20x+100=0; $ | $-10$ |
| 117. | $25x^2+160x+256=0; $ | $-\dfrac{16}{5}$ |
| 118. | $-25x^2+120x-144=0; $ | $\dfrac{12}{5}$ |
| 119. | $-25x^2+90x-81=0; $ | $\dfrac{9}{5}$ |
| 120. | $-324x^2+468x-169=0; $ | $\dfrac{13}{18}$ |
| 121. | $-361x^2+304x-64=0; $ | $\dfrac{8}{19}$ |
| 122. | $81x^2+36x+4=0; $ | $-\dfrac{2}{9}$ |
| 123. | $-169x^2+52x-4=0; $ | $\dfrac{2}{13}$ |
| 124. | $-x^2+38x-361=0; $ | $19$ |
| 125. | $25x^2+140x+196=0; $ | $-\dfrac{14}{5}$ |
| 126. | $-400x^2+760x-361=0; $ | $\dfrac{19}{20}$ |
| 127. | $100x^2+380x+361=0; $ | $-\dfrac{19}{10}$ |
| 128. | $81x^2+288x+256=0; $ | $-\dfrac{16}{9}$ |
| 129. | $-49x^2+84x-36=0; $ | $\dfrac{6}{7}$ |
| 130. | $121x^2+154x+49=0; $ | $-\dfrac{7}{11}$ |
| 131. | $16x^2+104x+169=0; $ | $-\dfrac{13}{4}$ |
| 132. | $64x^2+208x+169=0; $ | $-\dfrac{13}{8}$ |
| 133. | $36x^2+204x+289=0; $ | $-\dfrac{17}{6}$ |
| 134. | $49x^2+168x+144=0; $ | $-\dfrac{12}{7}$ |
| 135. | $25x^2+70x+49=0; $ | $-\dfrac{7}{5}$ |
| 136. | $-169x^2+78x-9=0; $ | $\dfrac{3}{13}$ |
| 137. | $324x^2+36x+1=0; $ | $-\dfrac{1}{18}$ |
| 138. | $400x^2+360x+81=0; $ | $-\dfrac{9}{20}$ |
| 139. | $-121x^2+22x-1=0; $ | $\dfrac{1}{11}$ |
| 140. | $-225x^2+330x-121=0; $ | $\dfrac{11}{15}$ |
| 141. | $-4x^2+52x-169=0; $ | $\dfrac{13}{2}$ |
| 142. | $225x^2+210x+49=0; $ | $-\dfrac{7}{15}$ |
| 143. | $256x^2+32x+1=0; $ | $-\dfrac{1}{16}$ |
| 144. | $4x^2+64x+256=0; $ | $-8$ |
| 145. | $25x^2+10x+1=0; $ | $-\dfrac{1}{5}$ |
| 146. | $81x^2+252x+196=0; $ | $-\dfrac{14}{9}$ |
| 147. | $324x^2+720x+400=0; $ | $-\dfrac{10}{9}$ |
| 148. | $324x^2+72x+4=0; $ | $-\dfrac{1}{9}$ |
| 149. | $289x^2+102x+9=0; $ | $-\dfrac{3}{17}$ |
| 150. | $-361x^2+760x-400=0; $ | $\dfrac{20}{19}$ |
| 151. | $-400x^2+200x-25=0; $ | $\dfrac{1}{4}$ |
| 152. | $121x^2+308x+196=0; $ | $-\dfrac{14}{11}$ |
| 153. | $16x^2+80x+100=0; $ | $-\dfrac{5}{2}$ |
| 154. | $361x^2+608x+256=0; $ | $-\dfrac{16}{19}$ |
| 155. | $-361x^2+342x-81=0; $ | $\dfrac{9}{19}$ |
| 156. | $-196x^2+280x-100=0; $ | $\dfrac{5}{7}$ |
| 157. | $-400x^2+320x-64=0; $ | $\dfrac{2}{5}$ |
| 158. | $361x^2+684x+324=0; $ | $-\dfrac{18}{19}$ |
| 159. | $4x^2+68x+289=0; $ | $-\dfrac{17}{2}$ |
| 160. | $121x^2+66x+9=0; $ | $-\dfrac{3}{11}$ |
| 161. | $-81x^2+270x-225=0; $ | $\dfrac{5}{3}$ |
| 162. | $4x^2+32x+64=0; $ | $-4$ |
| 163. | $-169x^2+494x-361=0; $ | $\dfrac{19}{13}$ |
| 164. | $-256x^2+544x-289=0; $ | $\dfrac{17}{16}$ |
| 165. | $169x^2+208x+64=0; $ | $-\dfrac{8}{13}$ |
| 166. | $36x^2+192x+256=0; $ | $-\dfrac{8}{3}$ |
| 167. | $-256x^2+352x-121=0; $ | $\dfrac{11}{16}$ |
| 168. | $256x^2+640x+400=0; $ | $-\dfrac{5}{4}$ |
| 169. | $x^2+32x+256=0; $ | $-16$ |
| 170. | $400x^2+680x+289=0; $ | $-\dfrac{17}{20}$ |
| 171. | $-81x^2+288x-256=0; $ | $\dfrac{16}{9}$ |
| 172. | $49x^2+280x+400=0; $ | $-\dfrac{20}{7}$ |
| 173. | $-400x^2+40x-1=0; $ | $\dfrac{1}{20}$ |
| 174. | $-9x^2+102x-289=0; $ | $\dfrac{17}{3}$ |
| 175. | $16x^2+88x+121=0; $ | $-\dfrac{11}{4}$ |
| 176. | $-289x^2+442x-169=0; $ | $\dfrac{13}{17}$ |
| 177. | $100x^2+240x+144=0; $ | $-\dfrac{6}{5}$ |
| 178. | $-64x^2+304x-361=0; $ | $\dfrac{19}{8}$ |
| 179. | $-361x^2+76x-4=0; $ | $\dfrac{2}{19}$ |
| 180. | $36x^2+36x+9=0; $ | $-\dfrac{1}{2}$ |
| 181. | $361x^2+38x+1=0; $ | $-\dfrac{1}{19}$ |
| 182. | $289x^2+34x+1=0; $ | $-\dfrac{1}{17}$ |
| 183. | $400x^2+720x+324=0; $ | $-\dfrac{9}{10}$ |
| 184. | $-4x^2+76x-361=0; $ | $\dfrac{19}{2}$ |
| 185. | $196x^2+84x+9=0; $ | $-\dfrac{3}{14}$ |
| 186. | $225x^2+420x+196=0; $ | $-\dfrac{14}{15}$ |
| 187. | $121x^2+418x+361=0; $ | $-\dfrac{19}{11}$ |
| 188. | $-81x^2+198x-121=0; $ | $\dfrac{11}{9}$ |
| 189. | $-100x^2+380x-361=0; $ | $\dfrac{19}{10}$ |
| 190. | $-49x^2+168x-144=0; $ | $\dfrac{12}{7}$ |
| 191. | $400x^2+280x+49=0; $ | $-\dfrac{7}{20}$ |
| 192. | $-36x^2+132x-121=0; $ | $\dfrac{11}{6}$ |
| 193. | $289x^2+238x+49=0; $ | $-\dfrac{7}{17}$ |
| 194. | $-324x^2+540x-225=0; $ | $\dfrac{5}{6}$ |
| 195. | $-169x^2+286x-121=0; $ | $\dfrac{11}{13}$ |
| 196. | $16x^2+136x+289=0; $ | $-\dfrac{17}{4}$ |
| 197. | $169x^2+520x+400=0; $ | $-\dfrac{20}{13}$ |
| 198. | $-4x^2+60x-225=0; $ | $\dfrac{15}{2}$ |
| 199. | $-64x^2+272x-289=0; $ | $\dfrac{17}{8}$ |
| 200. | $361x^2+760x+400=0; $ | $-\dfrac{20}{19}$ |
| 201. | $-169x^2+104x-16=0; $ | $\dfrac{4}{13}$ |
| 202. | $64x^2+304x+361=0; $ | $-\dfrac{19}{8}$ |
| 203. | $121x^2+44x+4=0; $ | $-\dfrac{2}{11}$ |
| 204. | $4x^2+44x+121=0; $ | $-\dfrac{11}{2}$ |
| 205. | $289x^2+510x+225=0; $ | $-\dfrac{15}{17}$ |
| 206. | $225x^2+60x+4=0; $ | $-\dfrac{2}{15}$ |
| 207. | $36x^2+132x+121=0; $ | $-\dfrac{11}{6}$ |
| 208. | $-25x^2+110x-121=0; $ | $\dfrac{11}{5}$ |
| 209. | $225x^2+480x+256=0; $ | $-\dfrac{16}{15}$ |
| 210. | $49x^2+238x+289=0; $ | $-\dfrac{17}{7}$ |
| 211. | $-144x^2+336x-196=0; $ | $\dfrac{7}{6}$ |
| 212. | $-121x^2+132x-36=0; $ | $\dfrac{6}{11}$ |
| 213. | $-81x^2+234x-169=0; $ | $\dfrac{13}{9}$ |
| 214. | $361x^2+76x+4=0; $ | $-\dfrac{2}{19}$ |
| 215. | $-256x^2+608x-361=0; $ | $\dfrac{19}{16}$ |
| 216. | $-16x^2+152x-361=0; $ | $\dfrac{19}{4}$ |
| 217. | $361x^2+304x+64=0; $ | $-\dfrac{8}{19}$ |
| 218. | $121x^2+132x+36=0; $ | $-\dfrac{6}{11}$ |
| 219. | $100x^2+340x+289=0; $ | $-\dfrac{17}{10}$ |
| 220. | $-169x^2+442x-289=0; $ | $\dfrac{17}{13}$ |
| 221. | $144x^2+192x+64=0; $ | $-\dfrac{2}{3}$ |
| 222. | $169x^2+104x+16=0; $ | $-\dfrac{4}{13}$ |
| 223. | $169x^2+390x+225=0; $ | $-\dfrac{15}{13}$ |
| 224. | $-289x^2+612x-324=0; $ | $\dfrac{18}{17}$ |
| 225. | $289x^2+374x+121=0; $ | $-\dfrac{11}{17}$ |
| 226. | $-100x^2+340x-289=0; $ | $\dfrac{17}{10}$ |
| 227. | $49x^2+266x+361=0; $ | $-\dfrac{19}{7}$ |
| 228. | $144x^2+312x+169=0; $ | $-\dfrac{13}{12}$ |
| 229. | $-64x^2+48x-9=0; $ | $\dfrac{3}{8}$ |
| 230. | $100x^2+20x+1=0; $ | $-\dfrac{1}{10}$ |
| 231. | $-361x^2+608x-256=0; $ | $\dfrac{16}{19}$ |
| 232. | $361x^2+190x+25=0; $ | $-\dfrac{5}{19}$ |
| 233. | $196x^2+476x+289=0; $ | $-\dfrac{17}{14}$ |
| 234. | $25x^2+190x+361=0; $ | $-\dfrac{19}{5}$ |
| 235. | $-225x^2+30x-1=0; $ | $\dfrac{1}{15}$ |
| 236. | $64x^2+176x+121=0; $ | $-\dfrac{11}{8}$ |
| 237. | $-144x^2+456x-361=0; $ | $\dfrac{19}{12}$ |
| 238. | $-400x^2+440x-121=0; $ | $\dfrac{11}{20}$ |
| 239. | $100x^2+260x+169=0; $ | $-\dfrac{13}{10}$ |
| 240. | $-9x^2+48x-64=0; $ | $\dfrac{8}{3}$ |
| 241. | $-25x^2+170x-289=0; $ | $\dfrac{17}{5}$ |
| 242. | $361x^2+228x+36=0; $ | $-\dfrac{6}{19}$ |
| 243. | $400x^2+40x+1=0; $ | $-\dfrac{1}{20}$ |
| 244. | $-361x^2+456x-144=0; $ | $\dfrac{12}{19}$ |
| 245. | $400x^2+760x+361=0; $ | $-\dfrac{19}{20}$ |
| 246. | $-x^2+30x-225=0; $ | $15$ |
| 247. | $-144x^2+408x-289=0; $ | $\dfrac{17}{12}$ |
| 248. | $289x^2+442x+169=0; $ | $-\dfrac{13}{17}$ |
| 249. | $9x^2+60x+100=0; $ | $-\dfrac{10}{3}$ |
| 250. | $4x^2+40x+100=0; $ | $-5$ |
| 251. | $-324x^2+396x-121=0; $ | $\dfrac{11}{18}$ |
| 252. | $-64x^2+208x-169=0; $ | $\dfrac{13}{8}$ |
| 253. | $-81x^2+342x-361=0; $ | $\dfrac{19}{9}$ |
| 254. | $324x^2+612x+289=0; $ | $-\dfrac{17}{18}$ |
| 255. | $-x^2+34x-289=0; $ | $17$ |
| 256. | $-36x^2+228x-361=0; $ | $\dfrac{19}{6}$ |
| 257. | $-121x^2+66x-9=0; $ | $\dfrac{3}{11}$ |
| 258. | $-36x^2+204x-289=0; $ | $\dfrac{17}{6}$ |
| 259. | $25x^2+90x+81=0; $ | $-\dfrac{9}{5}$ |
| 260. | $-196x^2+168x-36=0; $ | $\dfrac{3}{7}$ |
| 261. | $-4x^2+44x-121=0; $ | $\dfrac{11}{2}$ |
| 262. | $-9x^2+84x-196=0; $ | $\dfrac{14}{3}$ |
| 263. | $289x^2+680x+400=0; $ | $-\dfrac{20}{17}$ |
| 264. | $-256x^2+416x-169=0; $ | $\dfrac{13}{16}$ |
| 265. | $-121x^2+396x-324=0; $ | $\dfrac{18}{11}$ |
| 266. | $4x^2+36x+81=0; $ | $-\dfrac{9}{2}$ |
| 267. | $400x^2+440x+121=0; $ | $-\dfrac{11}{20}$ |
| 268. | $-25x^2+160x-256=0; $ | $\dfrac{16}{5}$ |
| 269. | $-64x^2+176x-121=0; $ | $\dfrac{11}{8}$ |
| 270. | $-4x^2+72x-324=0; $ | $9$ |
| 271. | $-169x^2+182x-49=0; $ | $\dfrac{7}{13}$ |
| 272. | $-361x^2+418x-121=0; $ | $\dfrac{11}{19}$ |
| 273. | $81x^2+90x+25=0; $ | $-\dfrac{5}{9}$ |
| 274. | $121x^2+352x+256=0; $ | $-\dfrac{16}{11}$ |
| 275. | $-256x^2+96x-9=0; $ | $\dfrac{3}{16}$ |
| 276. | $9x^2+78x+169=0; $ | $-\dfrac{13}{3}$ |
| 277. | $-x^2+32x-256=0; $ | $16$ |
| 278. | $9x^2+24x+16=0; $ | $-\dfrac{4}{3}$ |
| 279. | $-144x^2+120x-25=0; $ | $\dfrac{5}{12}$ |
| 280. | $-16x^2+112x-196=0; $ | $\dfrac{7}{2}$ |
| 281. | $-289x^2+476x-196=0; $ | $\dfrac{14}{17}$ |
| 282. | $-361x^2+646x-289=0; $ | $\dfrac{17}{19}$ |
| 283. | $196x^2+420x+225=0; $ | $-\dfrac{15}{14}$ |
| 284. | $289x^2+204x+36=0; $ | $-\dfrac{6}{17}$ |
| 285. | $-121x^2+418x-361=0; $ | $\dfrac{19}{11}$ |
| 286. | $289x^2+408x+144=0; $ | $-\dfrac{12}{17}$ |
| 287. | $-289x^2+68x-4=0; $ | $\dfrac{2}{17}$ |
| 288. | $-121x^2+154x-49=0; $ | $\dfrac{7}{11}$ |
| 289. | $144x^2+24x+1=0; $ | $-\dfrac{1}{12}$ |
| 290. | $-16x^2+56x-49=0; $ | $\dfrac{7}{4}$ |
| 291. | $25x^2+120x+144=0; $ | $-\dfrac{12}{5}$ |
| 292. | $361x^2+266x+49=0; $ | $-\dfrac{7}{19}$ |
| 293. | $-100x^2+260x-169=0; $ | $\dfrac{13}{10}$ |
| 294. | $64x^2+224x+196=0; $ | $-\dfrac{7}{4}$ |
| 295. | $49x^2+70x+25=0; $ | $-\dfrac{5}{7}$ |
| 296. | $-64x^2+112x-49=0; $ | $\dfrac{7}{8}$ |
| 297. | $64x^2+240x+225=0; $ | $-\dfrac{15}{8}$ |
| 298. | $-25x^2+140x-196=0; $ | $\dfrac{14}{5}$ |
| 299. | $-9x^2+120x-400=0; $ | $\dfrac{20}{3}$ |
| 300. | $49x^2+84x+36=0; $ | $-\dfrac{6}{7}$ |
| 301. | $361x^2+342x+81=0; $ | $-\dfrac{9}{19}$ |
| 302. | $-289x^2+408x-144=0; $ | $\dfrac{12}{17}$ |
| 303. | $-289x^2+340x-100=0; $ | $\dfrac{10}{17}$ |
| 304. | $49x^2+252x+324=0; $ | $-\dfrac{18}{7}$ |
| 305. | $-361x^2+152x-16=0; $ | $\dfrac{4}{19}$ |
| 306. | $225x^2+30x+1=0; $ | $-\dfrac{1}{15}$ |
| 307. | $-x^2+16x-64=0; $ | $8$ |
| 308. | $-4x^2+80x-400=0; $ | $10$ |
| 309. | $196x^2+252x+81=0; $ | $-\dfrac{9}{14}$ |
| 310. | $-16x^2+104x-169=0; $ | $\dfrac{13}{4}$ |
| 311. | $-196x^2+84x-9=0; $ | $\dfrac{3}{14}$ |
| 312. | $256x^2+576x+324=0; $ | $-\dfrac{9}{8}$ |
| 313. | $16x^2+72x+81=0; $ | $-\dfrac{9}{4}$ |
| 314. | $-121x^2+264x-144=0; $ | $\dfrac{12}{11}$ |
| 315. | $225x^2+390x+169=0; $ | $-\dfrac{13}{15}$ |
| 316. | $-49x^2+182x-169=0; $ | $\dfrac{13}{7}$ |
| 317. | $361x^2+494x+169=0; $ | $-\dfrac{13}{19}$ |
| 318. | $-121x^2+374x-289=0; $ | $\dfrac{17}{11}$ |
| 319. | $-361x^2+38x-1=0; $ | $\dfrac{1}{19}$ |
| 320. | $-289x^2+544x-256=0; $ | $\dfrac{16}{17}$ |
| 321. | $-289x^2+272x-64=0; $ | $\dfrac{8}{17}$ |
| 322. | $121x^2+88x+16=0; $ | $-\dfrac{4}{11}$ |
| 323. | $81x^2+360x+400=0; $ | $-\dfrac{20}{9}$ |
| 324. | $-289x^2+170x-25=0; $ | $\dfrac{5}{17}$ |
| 325. | $169x^2+78x+9=0; $ | $-\dfrac{3}{13}$ |
| 326. | $-324x^2+576x-256=0; $ | $\dfrac{8}{9}$ |
| 327. | $-324x^2+720x-400=0; $ | $\dfrac{10}{9}$ |
| 328. | $-100x^2+280x-196=0; $ | $\dfrac{7}{5}$ |
| 329. | $x^2+14x+49=0; $ | $-7$ |
| 330. | $169x^2+312x+144=0; $ | $-\dfrac{12}{13}$ |
| 331. | $-49x^2+252x-324=0; $ | $\dfrac{18}{7}$ |
| 332. | $256x^2+416x+169=0; $ | $-\dfrac{13}{16}$ |
| 333. | $-144x^2+168x-49=0; $ | $\dfrac{7}{12}$ |
| 334. | $121x^2+110x+25=0; $ | $-\dfrac{5}{11}$ |
| 335. | $9x^2+114x+361=0; $ | $-\dfrac{19}{3}$ |
| 336. | $289x^2+476x+196=0; $ | $-\dfrac{14}{17}$ |
| 337. | $-361x^2+532x-196=0; $ | $\dfrac{14}{19}$ |
| 338. | $x^2+22x+121=0; $ | $-11$ |
| 339. | $-361x^2+494x-169=0; $ | $\dfrac{13}{19}$ |
| 340. | $256x^2+160x+25=0; $ | $-\dfrac{5}{16}$ |
| 341. | $225x^2+330x+121=0; $ | $-\dfrac{11}{15}$ |
| 342. | $121x^2+396x+324=0; $ | $-\dfrac{18}{11}$ |
| 343. | $169x^2+468x+324=0; $ | $-\dfrac{18}{13}$ |
| 344. | $324x^2+684x+361=0; $ | $-\dfrac{19}{18}$ |
| 345. | $-81x^2+360x-400=0; $ | $\dfrac{20}{9}$ |
| 346. | $121x^2+198x+81=0; $ | $-\dfrac{9}{11}$ |
| 347. | $-121x^2+440x-400=0; $ | $\dfrac{20}{11}$ |
| 348. | $-225x^2+360x-144=0; $ | $\dfrac{4}{5}$ |
| 349. | $x^2+30x+225=0; $ | $-15$ |
| 350. | $-324x^2+360x-100=0; $ | $\dfrac{5}{9}$ |
| 351. | $121x^2+330x+225=0; $ | $-\dfrac{15}{11}$ |
| 352. | $-361x^2+190x-25=0; $ | $\dfrac{5}{19}$ |
| 353. | $81x^2+234x+169=0; $ | $-\dfrac{13}{9}$ |
| 354. | $361x^2+456x+144=0; $ | $-\dfrac{12}{19}$ |
| 355. | $-9x^2+96x-256=0; $ | $\dfrac{16}{3}$ |
| 356. | $-x^2+22x-121=0; $ | $11$ |
| 357. | $361x^2+418x+121=0; $ | $-\dfrac{11}{19}$ |
| 358. | $121x^2+440x+400=0; $ | $-\dfrac{20}{11}$ |
| 359. | $-36x^2+240x-400=0; $ | $\dfrac{10}{3}$ |
| 360. | $289x^2+306x+81=0; $ | $-\dfrac{9}{17}$ |
| 361. | $-9x^2+114x-361=0; $ | $\dfrac{19}{3}$ |
| 362. | $-225x^2+420x-196=0; $ | $\dfrac{14}{15}$ |
| 363. | $49x^2+126x+81=0; $ | $-\dfrac{9}{7}$ |
| 364. | $144x^2+264x+121=0; $ | $-\dfrac{11}{12}$ |
| 365. | $225x^2+510x+289=0; $ | $-\dfrac{17}{15}$ |
| 366. | $400x^2+520x+169=0; $ | $-\dfrac{13}{20}$ |
| 367. | $-289x^2+306x-81=0; $ | $\dfrac{9}{17}$ |
| 368. | $9x^2+102x+289=0; $ | $-\dfrac{17}{3}$ |
| 369. | $289x^2+68x+4=0; $ | $-\dfrac{2}{17}$ |
| 370. | $-324x^2+612x-289=0; $ | $\dfrac{17}{18}$ |
| 371. | $-400x^2+280x-49=0; $ | $\dfrac{7}{20}$ |
| 372. | $49x^2+56x+16=0; $ | $-\dfrac{4}{7}$ |
| 373. | $-196x^2+504x-324=0; $ | $\dfrac{9}{7}$ |
| 374. | $36x^2+168x+196=0; $ | $-\dfrac{7}{3}$ |
| 375. | $-81x^2+36x-4=0; $ | $\dfrac{2}{9}$ |
| 376. | $-49x^2+154x-121=0; $ | $\dfrac{11}{7}$ |
| 377. | $-289x^2+102x-9=0; $ | $\dfrac{3}{17}$ |
| 378. | $-x^2+36x-324=0; $ | $18$ |
| 379. | $-64x^2+240x-225=0; $ | $\dfrac{15}{8}$ |
| 380. | $-169x^2+234x-81=0; $ | $\dfrac{9}{13}$ |
| 381. | $64x^2+16x+1=0; $ | $-\dfrac{1}{8}$ |
| 382. | $144x^2+456x+361=0; $ | $-\dfrac{19}{12}$ |
| 383. | $196x^2+308x+121=0; $ | $-\dfrac{11}{14}$ |
| 384. | $-16x^2+88x-121=0; $ | $\dfrac{11}{4}$ |
| 385. | $196x^2+532x+361=0; $ | $-\dfrac{19}{14}$ |
| 386. | $361x^2+114x+9=0; $ | $-\dfrac{3}{19}$ |
| 387. | $-16x^2+120x-225=0; $ | $\dfrac{15}{4}$ |
| 388. | $-196x^2+448x-256=0; $ | $\dfrac{8}{7}$ |
| 389. | $-25x^2+180x-324=0; $ | $\dfrac{18}{5}$ |
| 390. | $x^2+26x+169=0; $ | $-13$ |
| 391. | $9x^2+66x+121=0; $ | $-\dfrac{11}{3}$ |
| 392. | $144x^2+408x+289=0; $ | $-\dfrac{17}{12}$ |
| 393. | $-25x^2+130x-169=0; $ | $\dfrac{13}{5}$ |
| 394. | $196x^2+28x+1=0; $ | $-\dfrac{1}{14}$ |
| 395. | $256x^2+320x+100=0; $ | $-\dfrac{5}{8}$ |
| 396. | $256x^2+224x+49=0; $ | $-\dfrac{7}{16}$ |
| 397. | $-121x^2+220x-100=0; $ | $\dfrac{10}{11}$ |
| 398. | $361x^2+532x+196=0; $ | $-\dfrac{14}{19}$ |
| 399. | $4x^2+60x+225=0; $ | $-\dfrac{15}{2}$ |
| 400. | $-196x^2+140x-25=0; $ | $\dfrac{5}{14}$ |