$$\int^2\left(x^2-3\right)dx$$

$$\frac{a^2-4}{a-2}$$

$$3y+\sin\left(2t\right)dt=dy$$

$$\left(2a^3b^2+3\right)^2$$

$$\frac{d}{dx}\left(\sqrt[5]{\frac{x\left(x+6\right)}{x^3+9}}\right)$$

$$\frac{37+\sqrt[3]{7-x}-36}{x-8}$$

$$x^2-4x\ge12$$