$\frac{2}{y+1}+\frac{3}{y-1}$

$\left(-2x^3-8x^2+12x+10\right)\left(x+5\right)$

$\frac{2\left(p-x\right)}{z}+\frac{m^2+n^2}{p}$

$\left(x^3+12\right)\left(x-3\right)$

$2xy\:+\:x^3y$

$\lim_{x\to\frac{\pi}{2}}\left(\frac{3-3\sin\left(x\right)}{\cos\left(x\right)}\right)$

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