$\left(\frac{1}{5}x^3-6xy^2z^{-1}\right)^2$

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

$2x\frac{dy}{dx}+y=6x$

$\left(1-\cos\:\left(\theta\:\right)\right)\left(1+\frac{1}{\cos\:\left(\theta\:\right)}\right)$

$-8z+8z$

$x^{2}+22x+121$

$f\left(x\right)=\frac{10}{4\sqrt{2x^3-5x^2+6x}}$