If f(x)=4x^2, finna and simplify

Question

f(1+h)-f(1)/h, where h does not equal 0

Answer 1

(4(1+h)^2 - 4(1)^2)/h
(4h^2 + 8h + 4 - 4)/h
(4h^2+8h)/h
4h+8