$\int\frac{-4}{x^2\sqrt[2]{4-x^2}}dx$

$\frac{dy}{dx}\left(x^8+y^5=x^8y^5\right)$

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

$tan\left(46\right)\left(1-tan\left(1\right)\right)-1$

$x-3>-x+9$

$\left(\frac{t-2}{4-2}\cdot\frac{t-2.5}{4-2.5}\right)$

$\lim_{x\to2}\left(\frac{x^2-2x-3}{x-2}\right)$