$a^{10}-49^{12}$

$\frac{d}{dx}\:\sqrt{\tan3t^3-4}$

$f'=\frac{1}{x}$

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

$36a^2-30ab+2b^2$

$\int_{-4}^5\left(\frac{4x^3}{55\sqrt{2x^2+5}}\right)dx$

$\frac{1}{\pi}\int_0^{\pi}\left(2\:\cos\left(nx\right)\right)dx$