$\frac{2}{x}\frac{2}{e^{x}}$

$\left(2x^4+2y\right)^3$

$-6c+12+15-5c-4c+7$

$\int_1^{e^x}\left(8\left(ln\left(x\right)\right)\right)dx$

$\left(7a^3\:+\:11b^2\right)^2$

$\left(x^2+7x+12\right)\left(x+1\right)$

$\frac{\left(16a^{4}b^{6}c^{-5}\right)\left(2a^{4}b^{3}c^{5}\right)}{\left(4a^{9}b^{6}c^{-5}\right)}$