$\frac{d}{dx}tangx+y=x$

$m^2n^5\cdot mn^4$

$\left(3a+b\right)\left(a-2b\right)$

$sinx+cosxcotx=\frac{1}{sinx}$

$\left(mn^2-4m+3m^2\right)\left(2m^2n+8m^2-2n^2-3m\right)$

$\frac{37-11}{\left(x+1\right)\left(x-2\right)\left(x-3\right)}$

$\frac{2}{5}\left(10+-5w+4w\right)$