Please show all work!

1. 2x²10x+12 = (A) (2x 3)(x 4) (B) [2(x 3)]² (C) 2(x 2)(x 3) (D) 2(x + 6)(x 1) (E) 2(x 5)(x 1)

2. Where defined, 18x³y⁸z/6x²y⁴z = (A) 3xy⁴ (B) 3xy² (C) xy^4/3 (D) 1/3xy² (E) y⁴/3x

5. Which of the following can be factored in the form (x + h)² , where h is an integer? (A) x² + 3 (B) x₂ + 9 (C) x² + 6x + 12 (D) x² + 6x + 36 (E) x² + 6x + 9

6. Where defined, (x²+x6/x+3)(x+2/x²-4)= (A) 0 (B) 1 (C) x2/x (D) x+1/x+2 (E) x+3/x+2

7. Where defined, 1/tan = (A) cos /sin (B) sin /cos (C) sec (D) cos (E) csc

8. If 4(x 2) + 5 = 6 (x + 5), then x = (A) 9/4 (B) 14/9 (C) 14/9 (D) 4/5 (E) 4/9

9. For what values of x is |2x + 5| = 15? (A) 5 only (B) 8 only (C) 5 and 5 (D) 10 and 5 (E) 5 and 10

10. What is the sum of the roots of the equation (x + 1)(x 2)(x 3) = 0? (A) 6 (B) 4 (C) 5 (D) 4 (E) 6

11. If x < 0, then 2 |x| +x = (A) 3x (B) 3x (C) x (D) x (E) 3 |x|