$\int x^2\left(x^3+5\right)^6dx$

$\lim_{n\to-1}\left(\frac{n^3-n}{n\left(n-1\right)\left(n+1\right)}\right)$

$\frac{6x^2+19x+12}{x+2}$

$\sqrt{11\csc\left(x\right)-121}$

$\sqrt{3}\text{sen}\left(x\right)=1$

$\left(y^2+8\right)\left(y+6\right)$

$\int\frac{6x^2}{\sqrt{x^3-1}}dx$