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

$\left(3x+2y\right)\left(9x^2+4y^2\right)\left(3x-2y\right)$

$\lim_{x\to\infty}\frac{\left(\cos\left(\frac{2}{x}\right)\right)}{x^{-3}}$

$\left(3a-4b^2\right)^5$

$\int_x^0\left(\frac{1}{1+4f}\right)df$

$y^2+4y+49$

$\frac{dy}{dx}\left(x^2+2x+2y^2=1\right)$