$x^2-160-360$

$-6x^2+7x+4x^2$

$\left(5y^{\left(6\:\right)}+12m^{\left(2\:\right)}\:\right)^5$

$\left(m+5\right)^2<\left(-8\right).\left(-2\right)$

$\frac{12a^2+6ab-15a^2b^2}{3}$

$30a^2+17a-21$

$\lim_{x\to0}\left(\frac{\left(2sin\left(9x^8\right)\right)}{-5x}\right)$