Question

A^3 + 2a^2 - a + 5 (a= -4)​

Answer 1

-23

Explanation:

Question: (-4)^3 + 2(-4)^2 - (-4) + 5

-4^3 = -64

= -64 + 2(-4)^2 - (-4) + 5

(since a is squared, and a = (-4), the minus is also squared.)

= -64 + 2*16 + 4 + 5

= -64 + 32 + 4 + 5

= -23