$\left(-5y+3xz^2\right)\left(-5y+3xz^2\right)$

$\lim_{x\to\frac{\pi}{4}}\left(\frac{sec^4\left(x\right)-4}{x-\frac{\pi}{4}}\right)$

$6a\:=\:0\:$

$\log_{17}\left(3y+8\right)=1$

$\int\left(2e^x\cos\left(x\right)\right)dx$

$\left(3x+40\right)\left(x-50\right)$