Question

If f(x) = x² – 1, and
g(x) = x + 2, then
f(g(x)) = [? ]x²+[ ]x + []

Answer 1

F(x+2) =(x+2)^2 -1
Put g into f
X^2 +4x +4 -1
So it would be

X^2 +4x +3