Question

Need help on this question please.

Answer 1

f(-2) = 26

Explanation:

By substituting -2 into the equation, we get

f(-2) = -(-2)^3 + 3(-2)^2 - 15(-2) - 24

Each of the parts can get simplified.

f(-2) = 8 + 12 + 30 - 24

Add and subtract everything.

f(-2) = 26

Hope this helps!

-Lacy