Let p = – 4, q = – 4, and z = – 2, and evaluate the expression. p^3 – 7qz^3

Question

Let p =  – 4, q = – 4, and z = – 2, and evaluate the expression.

Answer 1

Given p = -4, q = -4 and z = -2

p^3 = (-4)^3 = -64

z^3 = (-2)^3 = -8

Now p^3-7qz^3 = -64-7(-4)(-8)

= -64-224

= -288

p^3-7qz^3 = -288.