Question

Given the function f(x)=x^2+9 find f(x-2)

Answer 1

x^2 -4x+13

Explanation:

f(x)=x^2+9

Replace x with x-2

f(x-2)=(x-2)^2+9

FOIL

f(x-2)=x^2 -2x-2x +4+9

Combine like terms

= x^2 -4x+13