$\left(y+\sqrt{x^{2}+y^{2}}\right)dx-xdy=0$

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

$\lim_{x\to2}\left(\frac{2x^3-8x}{x^3-4x}\right)$

$\left(5\right)\:-\:\left(2\right)\cdot\left(-8\right)$

$\left(n^2-1\right)\left(n^2+5\right)$

$\left(\frac{13}{9}a^5b^5-\frac{7}{12}b^8\right)^2$

$\int\frac{\left(lnx\right)^2}{\sqrt[3]{x^3}}dx$