$\int\frac{x^4}{\left(2-x^5\right)^2}dx$

$\frac{1}{4}a^6-36b^{12}$

$\frac{d}{dx}\left(\frac{\:u}{u^2-1\:}\right)$

$\int\left(\frac{6x^2+12}{x-2}\right)dx$

$\frac{1}{1+\sin\left(x\right)}=\sec^2\left(x\right)-\sec\left(x\right)\tan\left(x\right)$

$\left(+3\right)-\left(4+7-9\right)-\left(-19+3+10\right)+\left(-2\right)$