Question

If f(x) = x2 – 1, andg(x) = x + 2, then

Answer 1

the answer is

$g(f(x))=1\cdot x^2+0\cdot x+2$

to solve a function composition we need to put the function inside the parentheses (f in this case) in the place of the x in the outside functin (g)

$g(f(x))=(x^2+1)+2$

I just replace x with f

then we solve. -1+2=1

$g(f(x))=x^2+1$