Chapter 8.1, Problem 5PE

For Exercise 3-14, refer to the function defined below.

$f\left(x\right)=x+4g\left(x\right)=2x^2+4xh\left(x\right)=x^2+1k\left(x\right)=\frac{1}{x}$

Find the indicated function. (See Example 1.)

5. $\left(g-f\right)\left(x\right)$