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

$\int\frac{5}{6}x^3\:\ln x-\frac{55}{36}x^3\:dx$

$\left(3a-b\right)\left(a-b\right)$

$\frac{d}{dx}\left(2\left(x^2+y^2\right)^2=25xy\right)$

$\left(4a^3b^2c\right)\left(-2a^4c^3\right)$

$2y+5y-8y$

$\left(\sqrt{2}\right)^n$