$3xz-4z$

$\sin^4\left(x\right)=\frac{1-\cos^2\left(x\right)}{\csc^2\left(x\right)}$

$8+2+\left(-10\right)-\left(-9\right)$

$\sqrt{\cot\left(x\right)}^2$

$12y^2+4y^2+15y^3+33y^3+12$

$393\cdot101$

$2\sqrt{3}\left(\cos\left(x\right)\right)\cdot\left(\csc\left(x\right)\right)+4\cos\left(x\right)-4\csc\left(x\right)-2\sqrt{3}$