Question

If f(x) = x2 - 1, and g(x) = x + 2, then f(g(x)) = [? ]x2+[?]x+[?]

Answer 1

Step-by-step explanation:

f.g(x) = f(x+2)

         =(x+2)2 -1

         =(x2+2*x*2+4)-1

         =x2+4x+4-1

         =x2+4x+3