$$\int11x\sqrt{x^2+4}dx$$

$$\int_0^{3n}\left(\sin\left(\sqrt{x}\right)\right)dx$$

$$\left(3y^2-1\right)\left(3y^2+1\right)$$

$$\int\frac{5x-4}{\left(x-7\right)^{\frac{8}{3}}}dx$$

$$\frac{\left(x+8\right)}{2x^2-13x-7}$$

$$\left(3z-3\right)^3$$

$$\sqrt{\left(1-\frac{x^2}{4}\right)}$$