$2x^2-2x-8$

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

$\int_0^{2\pi}\left(\sqrt{1+\cos\left(x\right)}\right)dx$

$\left(w=arctan\left(\frac{y}{x}\right)\right)$

$\lim_{x\to4}\left(-\frac{3x}{x-2}\right)$

$\int_{-40}^{\infty}\frac{-49\cos\left(x\right)}{20}dx$

$2x\frac{5}{3}>\frac{x}{3}+10$