Question

Evaluate the function:

f(x)=x2−4x, find f(−3)

Answer 1

f(-3) = 21

Explanation:

To solve this, you can replace all x's with -3 and then solve to find the answer.

f(x) = x^2 - 4x

f(-3) = -3^2 - 4(-3)

f(-3) = 9 - (-12)

f(-3) = 21

I hope this helps!