$\left(\frac{1}{2}+\frac{2}{3}c\right)^3$

$\cot\left(x\right)-\csc\left(x\right)=\frac{\cos\left(x\right)-1}{\sin\left(x\right)}$

$3x^2y^3\left(2x+y\right)^2\left(3x-1\right)^4z^5$

$\left(\sin\left(y\right)+\cos\left(y\right)\right)\left(\sec\left(y\right)+\csc\left(y\right)\right)$

$\left(\frac{3}{5}m-\frac{2}{5}p\right)^3$

$axy-xy$

$\frac{d^3y}{dx^3}+\frac{dy}{dx}-y+11x^2-9x=0$