Question

What is the value of f(−1)f(−1) when f(x)=2x+2f(x)=2x+2 ?

Enter your answer in the box.
f(−1)=f(−1)=

Answer 1

multiply f(x)*f(x)

Answer 2

f(x)*f(x) = (f(x))^2=(2x+2)^2
(f(-1))^2=(2(-1)+2)^2
=0

Answer 3

or just do this
f(-1)=2(-1)+2 =0
so f(-1)=0
then
f(-1)*f(-1) = 0 * 0 = 0

Answer 4

so the answer is 0 @518nad