$$\left(11x^4+3y^2\right)^2$$

$$\frac{1}{4}x+y=8$$

$$\frac{\cot x}{-1+\csc x}-\frac{\csc x}{\cot x};\tan x$$

$$\frac{1}{\sqrt{x^2e^{\frac{1}{x}}}}$$

$$\left(2-2y\right)ln\left(y\right)$$

$$3cot^2z+7cotz+2$$

$$b^6-27c^3$$