$$\frac{dy}{dx}+2xy=3$$

$$\int\frac{4x}{\left(x+2\right)\left(x+1\right)^2}dx$$

$$2\pi+7-\sqrt[8]{2}+5\pi-\sqrt[3]{2}$$

$$\frac{1}{\tan\left(x\right)^2}=\csc\left(x\right)^2-1$$

$$-3\left(-2\right)-5$$

$$\int\frac{8}{x^2\sqrt{x^2-3}}dx$$

$$x^2+9x+x$$