1, (x + 2)(x-1) = 0 3. (a-4)(a-5)=0 5" x(x + 1)(x-3) = 0 7" (3x + 2)(2x + 3) = ( 9. m(3m + 413m-4) = 0 11, 2y(3y + 1)(5y + 3) = 0 2. x + 3) (x + 2 4. (a + 6)(a 1 6. x(2x + 1)(x 8. (4x - 5)(x- 10. m(2m-5)(3, 12. 3y(2y -3)(3y Solve the following equations. 13. x2 +3x + 2 0 15, x2-9x + 20 = 0 17. a2 2a 24 0 19. 100x2 500x 600 0 14. x2-x-6 16, x2 + 2x-3= 23, a2-16 = 0 25, 2x2 + 5x-12=0 27, 9x2+ 12x+4=0 29. a2 + 25 10a 31. О = 20 + 3x-2x2 33. 3m2 20 7m 35, 4x2-49=0 37, x2 + 6x = 0 39. 3x_x2_0 41 , 2x2= 8x 43. 3x2 15x 45, 1,400 = 400 + 700x-100x2 47. 6X2=-5x + 4 49. x(2x 3) 20 51, t(t + 2) = 80 53, 4,000 = (1,300-100pp 55. x(14x)-48 57. (x + 5) 2x + 9 18. a2 11a 30 20. 100x2 300x 22, x2= 10x-25 24.a2-36=0 26. 3x2 + 14x 5 28. 12x2 24x + 9 30. a2 + 16 = 8a 32 0 = 2+x-6x2 34. 2n? =-18 +15 36. 16x2-25=0 38, x2 + 5x = 0 40. 8x_x2=0 42. 2x2-10x 44, 5x2-15x 46, 2,700 = 700 + 90 48. 9x2= 12x-4 50. x(3x 5) 12 52. t(t+ 2)=99 54. 3,200 (1,200-1 56, x(12-x) = 32 58, (x + 7)2 = 2x + 13 .

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