$f\left(x\right)=\left(x+1\right)\left(x-2\right)$

$\left(3x-1\right)\cdot\left(2x^2-8x+3\right)$

$\lim_{x\to4}\left(9\right)$

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

$\int9sin^2xcos^2xdx$

$10x+10y+10z$

$\int\frac{x+1}{\left(3x^2+6x-7\right)^8}dx$