## Precalculus (6th Edition) Blitzer

$(f o g)x= (x+2)^2$ and $(g o f) x=x^2+2$
We are given that $f(x)=x^2$ and $g(x)=x+2$ Our aim is to find $(f o g)x$ and $(g o f) x$ $(f o g)x= f(x+2)=(x+2)^2$ and $(g o f) x= g (x^2)=x^2+2$ Thus, our result are: $(f o g)x= (x+2)^2$ and $(g o f) x=x^2+2$