$\left(\frac{\left(-a^6b^{-2}c^{-1}\right)}{\left(4a^2b^5c^{-7}\right)}\right)^{-3}$

$\int\frac{\left(\sqrt{u\:}+\:3\right)^4}{\sqrt{u}}du$

$700-400\cdot e^{-0,5\cdot3}$

$\frac{\sin\left(2x\right)}{2\tan\left(x\right)}$

$\left(3x^2-1\right)\left(3x^2-3\right)$

$\int\left(x^4+x^2\right)e^x\:dx$

$\left(6-2\left(8\right)\right)$