$6x^2-16x-6$

$-18\:+\:\left\{-\:2\:-\left[9-3+\left(-5\:-\:1\right)\right]+11\right\}\:-\:6$

$\tan\left(x\right)\sin^2\left(y\right)dx+\cos\left(x\right)\tan\left(y\right)dy=0$

$-3x^{-3}$

$\int\frac{32sin^4xcosx}{\left(4-4sin^2x\right)^{\frac{3}{2}}}dx$

$\sqrt[6]{\left(x-1\right)\left(x+1\right)\left(x^2+1\right)\left(x^4+1\right)+1}$

$\cot x=\frac{\cos x}{\sin x}$