## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

$-\frac{1}{x+2}$
We can remove a factor of : $\frac{x-2}{x-2}=1$ $\frac{2-x}{x^2-4}=-\frac{x-2}{x^2-4}=-\frac{x-2}{(x+2)(x-2)}=-\frac{1}{x+2}$