Question

if f(x)=x^2-1 and g(X)=x+4, find f[g(x)]

Answer 1

start off by plugging in g(x); like f(x+4)

Answer 2

k. then should i get fx+4f

Answer 3

Do away with f's. Step two, once you have f(x+4) You plug in (x^2)-1 in place of x

Answer 4

After substituting g(x) into f(x) you should get f(x + 4)= (x + 4)^2 - 1. Expand the power of (x + 4) and subtract 1 for the final answer.

Answer 5

im lost