1. Period Exam Review Answer Key
1. 12x2 - 10x - 4 23. (7x + 12)(3x - 2)
2. 8x2 - 6x - 2 24. (x - 4)(x + 3)(x + 2)
3. 10x2 + 8x + 13 25. (x + 4)2
3 2
4. 6x - x + 12x + 9 26. x = ± 2
5. -x4 - 5x3 - 5x2 - 3x - 5 27. x = ± 5√2
6. a2 + 2ab + b2 28. x = -5 , x = 15
7. 49x2 - 16 29. a = ± 3√2
8. 4x2 - 20x + 25 30. x = ± 2√3 + 8
9. 2x2 + 12x + 18 31. (11x + 4)(x - 2)
10. 3x3 - 25x2 + 18x + 24 32. (x - 4)(x + 1)
11. (10x + 9)(10x - 9) 33. (r + 8)(r - 6)
12. (3x - 2)(x + 5) 34. (x - 5)(x - 2)
13. (5x + 1)2 35. (x - 3)2
3
14. 4x (x - 4)(x + 2) 36. (4x - 3)(x + 1)
15. (x + 2)(3x + 1) 37. d = 0 1 solution x=1
16. 4(x + 1)2 38. d = 4 2 solutions x=±1
17. (x - 7)(x + 7) 39. d = 16 2 solutions x = -3 , x = 1
18. 3x2(x2 + 3) 40. d = 56 2 solutions x = (-2 ± √14) /2
19. (x - 24)(x + 3) 41. d = 0 1 solution x = -3/2
20. (7x - 2)(x - 1) 42. d = -16 2 solutions x = (1 ± i√29) /3
21. (x + 1)(3x - 5) 43. 74, 76, 78
22. (3x - 2)(11x + 7) 44. x = -4 , x = 2