$\left(3mn-2\right)\left(2y\right)$

$\int\left(x^2+cos\left(\frac{1}{3}\right)\right)dx$

$\frac{d}{dx}\left(x^{\sin\left(x\right)}+y^{\cos\left(x\right)}\right)$

$18x-10x-77x$

$\ln\left(x\right)+\ln\left(x+4\right)=\ln\left(15\right)+\ln\left(3\right)$

$100x\:2\:-\:36m\:2\:=\:\left(10x\:+\:6m\right)\left(10x\:-\:6m\right)$

$\left(\frac{x}{4}-5\right)\left(\frac{x}{4}+5\right)$