Question

Given that f(x) = x² + 4x, evaluate f(-2).

Answer 1

f(-2) means that you plug in -2 for each 'x' that you see. So: -2^2 + 4(-2) = ?

Answer 2

f(-2) = (-2)^2 + 4(-2)
f(-2) = 4 - 8
f(-2) = -4
You just plug the -2 in for the x

Answer 3

thanks

Answer 4

so the answer would be −12