$\csc\left(b\right)^2=\frac{\tan\left(b\right)^2+1}{\tan\left(b\right)^2}$

$\left(n+11\right)\left(m-11\right)$

$44+\:395$

$\left(x-1\right)\left(2x-5\right)\left(x+8\right)$

$\int_0^2\left(x^4\cdot\ln\left(x\right)\right)dx$

$\int\:2x^5\:e^{3x}\:dx$

$\lim_{x\to\infty}\left(\frac{2x^2-4x}{x-2}\right)$