$\cot\left(x\right)\csc\left(x\right)=\frac{\csc\left(x\right)^2-1}{\cos\left(x\right)}$

$\sqrt[6]{8a^9}b^{12}$

$\left(v+15\right)\left(v-15\right)$

$2\:-\left(-3\right)\:+\:6$

$\int x\left(-2x^2+8\right)^{-9}dx$

$\cos^2\left(\cot^2+1\right)$

$\frac{\tan^2\left(x\right)-2tanx-3}{\tan\left(x\right)+1}$