$$\frac{x^2y^3}{xy^2}$$

$$\int\:\left(x-x^{-3}\right)\sqrt{x\sqrt{x\sqrt{x}}}\:dx$$

$$5b+\left(-5a\right)$$

$$\frac{dy}{dx}=6-\frac{2y}{x}$$

$$5x+2x^2-y+2x-x^2+2y$$

$$\frac{x^3+7x^2-14x-120}{x+6}$$

$$\frac{2\left(3x+2\right)}{15}+\frac{1}{3}>\frac{3x+1}{4}-\frac{20\left(4-4x\right)}{3}$$