$$\frac{dy}{dx}\left(x^3+1\right)^4$$

$$-9\left(y-7\right)$$

$$\:\left(\:13x^2\:+\:10y^2\right)^2$$

$$-67\left(-80\right)$$

$$\frac{\frac{\left(x-4\right)}{y-12}1}{2}$$

$$\left(1+\frac{x}{5}\right)^{\frac{1}{3}}$$

$$\frac { 16 m ^ { 2 } n ^ { 4 } } { - 5 n ^ { 3 } }$$