$$\lim_{x\to-\infty}\left(\frac{5x^4-1}{x^5+6x^3}\right)$$

$$-173-162$$

$$\sqrt[3]{a}-3a^{\frac{1}{3}}+\sqrt[3]{\frac{a}{8}}$$

$$+9+10-11-1+7$$

$$2x^{-4}y^3\left(2x^3y^{-4}\right)^{-1}$$

$$2300+-1500$$

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