$$\frac{dy}{dx}\left(8x^5+3y^5=11xy\right)$$

$$y^2-10+25$$

$$\left(9-8x\right)\left(9+8x\right)$$

$$\sin\left(-\frac{8}{17}\right)\cos\left(-\frac{15}{17}\right)$$

$$\left(-83\right)\left(0\right)$$

$$y=\frac{2}{3}\:x^6-\sqrt{x}$$

$$4+3\:.-2\:\:-8+2$$