Question

For the next three problems, evaluate each expression if x = −2, y = 4, and z = −3.

(4 − 2x)−2

(y − z)−3

(x − 5y)0

Answer 1

(4-2(-2))-2 = (4-(-4)) = 4+4) = 8
(4-(-3))-3 = (4+3)-3 = 4+3-3 = 4
(-2-5(4))0 = 0
(anything times 0 = 0)