$$\left(2x\:+\frac{1}{2}\right)^2$$

$$4n^2-49$$

$$f\left(x\right)=\frac{e^{-3x}\sqrt{2x-6}}{\left(6-5x\right)^{4}}$$

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

$$\frac{2x^5-8}{2x-2}$$

$$\int\left(8x^2+7\right)^4xdx$$

$$-7.6-88$$