1. x²-3x+2=0 26. x2+3x+2=0 51. x² - x - 2 = 0 2. x²-4x+3=0 27. x²+4x+3=0 52. x²-2x-3=0 3. x²-5x+4=0 28. x²+5x+4=0 53. x²-3x-4=0 4. x²-6x+5=0 29. x²+6x+5=0 54. x²-4x-5=0 5. x²-7x+6=0 30. x²+10x+9=0 55. x²-5x-6=0 6. x²-5x+6=0 31. x²+ 16x + 15=0 56. x²-x-6=0 7. x²-8x+7=0 32. x²+8x+15=0 57.x²-7x-8=0 8. x²-9x+8=0 33. x²+17x + 16=0 58. x²-2x-8=0 9. x²-6x+8=0 34. x²+10x+16=0 59. x²-9x-10=0 10. x²-11x+10=0 35. x²+19x+18=0 60. x²-3x-10=0 11. x²-7x+10=0 36. x²+11x + 18 = 0 61. x²-x-30=0 12. x²-13x + 12 = 0 37. x²+ 9x +18=0 62. x²-26x-27=0 13. x² - 8x +12=0 38. x²+21x+20=0 63. x²-6x-27=0 14. x²-7x + 12 =0 39. x²+12x+20=0 64. x²-35x-36=0 15. x²-25x + 4 = 0 40. x²+ 9x + 20 = 0 65. x²-16x - 36 = 0 16. x²-3x + 2 = 0 41. x²+31x + 30 = 0 66. x²-9x-36 = 0 17. x²-11x + 24 = 0 42. x²+ 17x +30=0 67. x²-5x-36=0 18. x²- 10x + 24 = 0 43. x² + 13x + 30 = 0 68. x²-39x-40=0 19. x²-13x +36=0 44. x²+11x + 30 = 0 69. x²-18x-40 = 0 20. x²-16x + 48=0 45. x²+16x + 28 = 0 70. x²-6x-40=0 21. x²-17x + 52 = 0 46. x² + 17x +42=0 71. x²-3x-40=0 22. x²-27x+72=0 47. x²+28x + 52 = 0 72. x²-11x-26=0 23. x²-17x+60=0 48. x²+18x+72=0 73. x²-3x-54=0 24. x²-13x +42=0 49. x²+19x + 60=0 74. x²-12 x 64=0 25. x²-11x + 28 = 0 50. x²+14x + 45 = 0 75. x²-2 x - 80=0