SOLUTION: Let f(x)=2x^2-7 and g(x)=x+2. Find (fog)(x). Show step by step work. Thanks in advance!

Algebra ->  Functions -> SOLUTION: Let f(x)=2x^2-7 and g(x)=x+2. Find (fog)(x). Show step by step work. Thanks in advance!      Log On


   

Question 1010471: Let f(x)=2x^2-7 and g(x)=x+2. Find (fog)(x). Show step by step work.
Thanks in advance!
Found 2 solutions by fractalier, It is costly:
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
(fog)(x) = f(g(x)) = f(x+2) = 2(x+2)^2 - 7 = 2(x^2+4x+4) - 7 =
= 2x^2 + 8x + 1

Answer by It is costly(175) About Me  (Show Source):