$$\left(p+8\right)\left(p\right)$$

$$2\sin\frac{11\pi}{12}\cos\frac{11\pi}{12}$$

$$-6x-6+x-6$$

$$\frac{x^4-x^3-2x}{x+3}$$

$$x^2-6x-5$$

$$\sqrt{\left(-2\right)^3}$$

$$-\cot\left(\frac{5\pi}{6}\right)+\cot\left(\frac{\pi}{6}\right)$$