$8.2h\:+\:2.8h$

$\int\:\frac{u^3+u}{\left(u^4+2u^2+1\right)^5}du$

$\frac{d}{dx}\left(\frac{e^{x^2}}{\sqrt{8-x^5}}\right)$

$\left(x^3+3\right)\left(n^3-6\right)$

$\frac{x+3}{x+4}\frac{1}{x}$

$\frac{d}{dy}\left(\ln\left(xy\right)=ax^2+by\right)$

$\int\sin^3\left(3\right)dx$