Question

If f(x) = x^2 - 4, find f(x + h)

A. f(x + h) = x^2 + xh + h^2 - 4
B. f(x + h) = x^2 + h^2 - 4
C. f(x + h) = x^2 + 2xh +h^2 + 4
D. f(x + h) = x^2 + 2xh + h2 - 4

Answer 1

$f(x+h)=(x+h)^2-4=x^2+2hx+h^2-4$