Question

Pls give explanation and steps ik it equals zero
f(5)=-(5)^3+7(5)^2-7(5)-15

Answer 1

0 (as you already know)

Explanation:

First we will simplify both sides of this equation:

5f = -125 + 175 + -35 + -15

Now we are going to Combine Like Terms:

5f = (-125 + 175 + -35 + -15)

5f = 0

Divide both sides by 5

5f / 5 = 0 / 5

F = 0

Hope this helps