SOLUTION: If f(x) = x2 + x and g(x) = x − 3, find f(g(7)).

Algebra ->  Functions -> SOLUTION: If f(x) = x2 + x and g(x) = x − 3, find f(g(7)).      Log On


   

Question 1078219: If f(x) = x2 + x and g(x) = x − 3, find f(g(7)).
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
f%28g%29=g%5E2%2Bg
f%28g%29=%28x-3%29%5E2%2B%28x-3%29
f%28g%29=%28x-3%29%281%2Bx-3%29
f%28g%29=%28x-3%29%28x-2%29
f%28g%287%29%29=%287-3%29%287-2%29
f%28g%287%29%29=4%2A5
Work that out for the final answer.