$\frac{4x^2+18x-36}{4x-6}$

$\int\left(x^3+4x+2\right)^2\left(3x^2+4\right)dx$

$\int\frac{x^2-x}{\left(x-2\right)\left(x-1\right)^2}dx$

$7^3+\frac{1}{x^3}$

$10\log\left(10^{10}\right)$

$5w-\:8w$

$\lim_{x\to\pi}\left(\frac{x^2-\pi^2}{\frac{1}{tan\left(\frac{x}{2}\right)}}\right)$