$2-\frac{2}{5}^2+1.2\left(\frac{2}{5}-2\right)$

$\lim_{x\to8}\left(\frac{x-8}{\sqrt{\sqrt[3]{x}}-2}\right)$

$\lim_{x\to\pi}\left(\frac{x}{2}\right)csc\left(x\right)$

$-a\left(a+b\right)$

$\frac{dy}{dx}y=4x^9-7x^6+2x^3-5$

$y^2\left(y+1\right)+5\left(y+1\right)$

$\int6xe^{2x}dx$