$x^2y-4xy^2$

$\int\:\:x\sqrt[3]{2x^2+1}dx$

$\left(a+\frac{3}{10}\right)^2$

$36^6-25x^2$

$\lim_{x\to0}\left(\frac{1}{\ln\left(1+2x\right)}-\frac{1}{3x}\right)$

$\frac{1}{\csc\left(w\right)+\cot\left(w\right)}=\csc\left(w\right)-\cot\left(w\right)$

$-11\:+\:-10\:+\:-3\:+\:-6\:+\:12\:+\:18\:+21\:+19\:+\:15+\:9+\:2$