Question

Let f(x)=2x-3 and g(x)=x+4. Find f(g(x)) and g(f(x)).

f(g(x)) =

Answer 1

f(g(x)) = =2(-x^2+5)-3

=-2x^2+10-3

=-2x^2+7

Sorry, I'm not sure about g(f(x)).

Explanation:

f(g(x))=f(-x^2+5)=2x-3

=2(-x^2+5)-3

=-2x^2+10-3

=-2x^2+7