$\int\frac{2x^2+3x+2}{x^3+x}dx$

$\frac{\tan\left(x\right)}{\csc\left(x\right)+\cot\left(x\right)}-\frac{\tan\left(x\right)}{\csc\left(x\right)-\cot\left(x\right)}=-2$

$\left(5x+4\right)\left(5x-1\right)$

$\frac { 2 n - 2 n } { 2 n }$

$\left(m^5n+m^2n^6\right)^2$

$tan\left(a-b\right)=\frac{\left(tan\left(a\right)-tan\left(b\right)\right)}{1+tan\left(a\right)tan\left(b\right)}$

$\lim_{x\to-2}\left(x^3-7x^2-8x+24\right)$