$\frac{\sin\left(x\right)}{\cos\left(x\right)+1}+\frac{\sin\left(x\right)}{\cos\left(x\right)-1}=2\cot\left(x\right)$

$\lim_{x\to\frac{\pi}{2}}\left(\sin\left(x\right)\right)^{\frac{1}{\cos\left(x\right)}}$

$3x^2-5x+1\cdot\left(-x^3\right)+2x^2-3$

$-2x+5<x+14$

$\sqrt[5]{32x}^3$

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

$\left(x^2+y^2+z^2-xy-yz\right)\cdot\:\left(x+y+z\right)$