$2a^2bc^2-5a^2bc^2+3a^2bc^2-a^2bc^2=0$

$\frac{3xy+2}{5}+\frac{3xy-1}{2}$

$\frac{1}{\pi}\int_{-\pi}^0\left(-\pi sin\left(n\right)\right)dx$

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

$\:\left(m^4n\:-7\right)\left(m^4n\:+7\right)$

$8b^3+27y^3$

$\left(4xy+8\right)\cdot\left(4xy-8\right)$