SOLUTION: Given that f(x)=x^2-3 and g(x)=2x+1, find each of the following, it it exists (fg)(2)

Algebra ->  Rational-functions -> SOLUTION: Given that f(x)=x^2-3 and g(x)=2x+1, find each of the following, it it exists (fg)(2)      Log On


   

Question 269879: Given that f(x)=x^2-3 and g(x)=2x+1, find each of the following, it it exists
(fg)(2)
Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
First we find g(2) as
g(2) = 2(2) + 1 = 5
second, f(g(2)) = f(5) = 5^2-3 = 25 - 3 = 22