$-z-4z$

$\int\:\left(tgx+secx\right)^2\:dx$

$\int\frac{3\sin\left(x\right)\cos\left(x\right)}{4}dx$

$\int\frac{x^2-4x-17}{\left(x^2+1\right)\left(x-1\right)}dx$

$\sqrt[3]{64}\cdot3^2$

$-516+302$

$\lim_{x\to\frac{\pi}{2}}\left(\frac{\cos\left(x\right)}{sin\left(x\right)-1}\right)$