$\frac{n}{3^n}\left(x-2\right)^n$

$25x^2+100x+10$

$\left(x^3+3y\right)\left(y^3+3y\right)$

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

$\int\left(2x+1\right)\left(x-5\right)\:dx$

$\int_1^{+\infty}\left(\frac{4}{x\sqrt[2]{2x^2}-1}\right)dx$

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