Unit 2 Last Chance Review Key

1.a. r¹⁰

b. n¹⁶

2.a. 11a³ – 6a² + 6a – 12

b. -4m² – 12m + 10

3.a. -42a⁶b²

b. -6x⁴ -2x³ + 8x² – 2x

c. 2y² + 13y – 45

d. c² – 36

e. g³/8h⁵

f. 4y⁵ – 6y³ + 7y²

4.a. 5a⁴b³(4a² – 3ab+ 2b²)

b. 4(b³ – 2b² + 4)

c. 5x²y(7 + 8xy)

5.a. (y – 2)(y – 8)

b. (y + 8)(y + 3)

c. (x – 6)(x + 5)

6.a. trinomial; 12n³ + 3n² – 19

b. monomial; 29m²np

c. binomial; -64x² + 24

7.a. 1,4 or 2,3 or 5,7 or 6,8

b. 3,6 or 4,7

c. 1,5 or 2,8

d. 1,7 or 2,6 or 3,8 or 4,5

e. 34º, 146º

8.a. many (same coefficients, same constants)

b. one (different coefficients)

c. none (same coefficients, different constants)

9. x = -2