$p^2-p-6$

$\left(1+\cos x\right)^2+\left(1-\cos x\right)^2+2\sin^2x=4$

$\left(3x+6\right)^3$

$\left(2x^3-6x^2+3x+9\right):\left(x+3\right)$

$\frac{x^5-x^4-2}{x^2+1}$

$\lim_{x\to\infty}\left(\frac{-1}{2}\right)^{\left(x-1\right)}$

$\int\frac{\left(e^xsinx\right)}{x}dx$