$\left(\frac{3}{4}m-\frac{2}{3}n\right)^2$

$\frac{d}{dx}\frac{\sqrt{7x+2}}{x+1}$

$\left(-m+2\right)^2$

$\frac{20}{2x}$

$\left(5a\:+\:4\right)^2$

$\frac{\left(\sqrt{m}+\sqrt[4]{n}\right)\left(m+\sqrt{n}\right)}{m^2-n}$

$\lim_{x\to\infty}\left(\left(\frac{\sqrt{4x^2}-3x+2}{x+1}\right)\right)$