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

$2\left(\ln\left(x\right)-\ln\left(x+1\right)+\frac{3}{2}\ln\left(x-1\right)\right)$

$x+20.509=-200$

$\frac{dy}{dx}\left(-\sin\left(y\right)\right)$

$6ab-9ac+12ad-6ab+2ac-18ad$

$824-605.18$

$2^{\left(\left(-5+-2\right)\right)+7}$