$$4x^3-24x^2+36x$$

$$\left(x-y\right)\cdot x=y+x$$

$$f\left(x\right)\:=\:\left(9-x^2-4x\right)\left(-10x^2+10\right)$$

$$csc^2x+2\:cot\:x$$

$$\int\frac{x}{e^{x^2}}dx$$

$$\frac{\sqrt{3}}{\sqrt{x}}$$

$$\frac{x^{-7}\cdot x^3}{x^5}$$