$\left(\sin\left(x\right)^6+\sec\left(x\right)^2\sin\left(x\right)^8\right)\cos\left(x\right)^2$

$\csc\left(x\right)-\frac{1}{\csc\left(x\right)+\cot\left(x\right)}$

$\left(-3a^2b^4c^6\right)^2$

$\frac{1}{m-1}+\frac{2}{m}$

$y=x^2+4x$

$\sin\left(3x-\frac{1}{2}\right)$

$\int\left(\frac{x-tan^{-1}\left(x\right)}{x^3}\right)dx$