$\lim_{x\to3}5x+3$

$\left(2p-2q\right)^2$

$a+\frac{c}{d\:}-n$

$\int\frac{2x}{1-\sqrt[3]{x}}dx$

$\frac{tan\left(x-y\right)+tan\left(y\right)}{1-tan\left(x-y\right)\cdot tan\left(y\right)}=\tan\left(x\right)$

$\frac{x}{8}+\left(-21\right)=\left(-37\right)$

$4+\frac{2x-3}{2x+3}$