les 4-6 Solve each equation by completing the square. 31. x2 + 2x – 12 = 0 34. 2x2 + x- 3 = 0 32. x2 + 6x + 8 = 0 35. 2x2 – 3x + 5 = 0 30. x2 - 4x + 12 = 0 33. x2 - 4x + 3 = 0 38. x2 – 2x + 3 = 0 37 3x? – 6x – 9 = 0 40. x2 – 6x + 18 = 0 36. 2r? + 5x + 7 = 0 39. x2 + 4x + 11 = 0 41. x2 – 10x + 29 = 0 43. 2x2-7x = -12 46. x² -- =0 42. 3x2 – 4x = 2 44. x2 – 2.4x = 2.2 47. x2-- =0 45. x2 - 5.3x = -8.6

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