$\int\frac{2x^3-2x^2-1}{x^2-x}dx$

$-45:\left(-2+12:\left(-7+3\right)\:\right)\:+12$

$-12q-9$

$\frac{d}{dx}\left(\sqrt{\tan\left(e^x\right)}\right)$

$\int x\left(14x-20\right)\left(7x-5x^2-7\right)dx$

$\int\left(\left(x^2-4x+4\right)-\left(-x^2+2x+3\right)\right)dx$

$\sqrt[6]{a^2}$