$\int x\:\cot\:^2\left(2x^2\right)dx$

$3x^2=27$

$-3\left(6x+4y-8y\right)$

$\int_0^{\frac{\pi}{4}}\left(\frac{5\cos\left(x\right)+2\sin\left(x\right)}{\left(\cos\left(x\right)\right)^3}\right)dx$

$5z+\left(-5+3z^2-z^3\right)+\left(+7+3z^2+z^3\right)-5$

$\frac{dy}{dx}=\frac{5y}{x-1}$

$x^2+79x+16$