$\lim_{x\to\infty}\left(\frac{\left(n^2+1\right)}{\sqrt{9n^6+3n-2}}\right)$

$\left(\frac{2a}{5}+\frac{3a}{2}\right)^2$

$\frac{x\:+\:13}{12}\:=1$

$\frac{d}{dx}\left(\ln\left(7\right)^x\right)$

$\int\sqrt[3]{\tan\left(7x\right)}\sec^2\left(7x\right)dx$

$\frac{\left(x^2+2x-63\right)}{\left(x+9\right)}$

$\int x^3\left(2-x^2\right)dx$