Question

simplifiy f(x)=x^2-1 if f(4+h)

Answer 1

(4+h)(4+h)-1
h^2+8h+15

Answer 2

insert (4+h) into f(x)=X^2-1
f(4+h)=f(x)
so x=(4+h)

Answer 3

got it miller

Answer 4

got it : )