$\sqrt[3]{\left|\frac{x}{y}\right|^2+\left(\frac{y}{x}\right)^{\cdot2}+4}$

$\left(\:-10\:-\:-20\right)\:.\:30$

$4x^3+32$

$\frac{2m^2n^6}{-3mn^6}$

$\lim_{x\to0}\left(\frac{1-\cos\left(x\right)}{x^2-9}\right)$

$\frac{x^3}{2x^2-5x-3}$

$\left(\frac{5}{3}x^4-\frac{3}{4}\right)^2$