Subtract and simplify.

$\displaystyle\frac{{{5}{{x}}^{{2}}+{2}{x}}}{{{{x}}^{{2}}+{2}{x}-{8}}}-\frac{{{{x}}^{{2}}+{10}{x}}}{{{{x}}^{{2}}+{2}{x}-{8}}}\usepackage{cmbright}\Huge\$

Domain all of x, $\displaystyle{x}\ne-{4}\usepackage{cmbright}\Huge\$ and 2