$\frac{20a^2xy^2}{-4axy^3}$

$x^6y^{10}\:-\:49z^4$

$\int\left(\frac{u-2}{\sqrt{u}}\right)dx$

$\left(\frac{-5x}{3}\right)^{\frac{1}{3}}$

$2^2\cdot\frac{1}{\frac{1}{2^{-1}}}$

$\int3\cdot\frac{\left(sin\left(x\right)\right)}{\sqrt{cos\left(x\right)}}dx$

$4\left(x-1\right)^2-5<395$