$-7r-2r$

$\lim_{x\to0}\left(\frac{2tan\left(x\right)-arcsin\left(x\right)}{sin\left(x\right)}\right)$

$7a^2y-11a^2y$

$\int\left(\frac{cosx}{8-5sinx}\right)dx$

$10\sqrt[5]{a^2}bc^3$

$y\:=\:3\:\left(\:x\:+\:5\:\right)\:\left(\:x\:-\:2\:\right)$

$\tan\left(x\right)\cdot\cot\left(x\right)\cdot\cos^2\left(x\right)$