Question

Let f(x)=x+3 and g(x)=x^2. find (gf)(5)

Answer 1

`g(f(5))=64`

Explanation:

we have

`f(x)=x+3`

`g(x)=x^(2)`

we know that

`g(f(x))=(x+3)^(2)`

so

`g(f(5))=(5+3)^(2)=64`