$$\int4x\left(\frac{4x}{\sqrt{16-x^2}}\right)dx$$

$$\int\left(2\sqrt{x}-\frac{1}{2}\right)^2\left(3x-2\right)dx$$

$$-6yxy$$

$$5x^2y^3\left(4x^2+2xy+3y^2\right)$$

$$e^x\frac{dy}{dx}=e^{-y}+e^{2x-y}$$

$$2x\:+\:3\:-\:5x\:+\:10\:-\:6\:+\:x$$

$$x-3<3x+6$$