$12m^2n+24m^{3\:}n^2-36m^4n^3$

$\left(2x+3\right)\left(x^{2}+3x\right)^{2}$

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

$n^8-6561$

$\left(\frac{1}{3}\right)^3-3\left(\frac{1}{3}a\right)^2\left(b^2\right)$

$\frac{11x+2}{2}+\frac{9x-7}{12}>17$

$sin\left(-a\right)+cos\left(-a\right)+tan\left(-a\right)$