$\frac{x^3+x^{-2}}{e^{5x}}$

$\left(a+\sqrt{3}\right)\left(a-\sqrt{3}\right)\left(3-a^2\right)$

$\left(4c^2-c\right)\left(16c^4+4c^3+c^2\right)$

$\left(-\frac{12x^{-3}}{6y^{-8}}\right)^{-1}$

$\frac{d^2y}{dg^2}+2\frac{dy}{dg}=0$

$-12.75-0$

$\frac{8k^{11}m^6}{12k^{10}m^5}$