$$6xy+9y-2x-3$$

$$\sqrt[3]{27xy}$$

$$9a^2b^2+12a^2b$$

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

$$\frac{dy}{dx}=-\left(\frac{2xy}{1+x^2}\right)$$

$$5x\:+\:3\:=\:43$$

$$\frac{\left(\frac{x}{2}-\frac{2x}{3}-5\right)}{6}$$