Chapter 8.5, Problem 3PE

For Exercises 2-7, refer to the functions defined below.

$f\left(x\right)=x^2$ $g\left(x\right)=x-2$ $h\left(x\right)=\sqrt{2-x}$

Find the indicated functions or function values.

$\left(f\circ g\right)\left(x\right)$