$\int\left(\frac{1}{\left(7x+8\right)^{2.8}}\right)dx$

$\frac{d}{dx}\left(\sqrt[3]{\frac{x\left(x-8\right)}{x^2+6}}\right)$

$\left(x-6y\right)\left(x-9y\right)$

$\int\left(\frac{5x^4}{\sqrt{16-x^{10}}}\right)dx$

$3x>900$

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

$\frac{tan\:x-\:senx}{tanx}$