$x^3-x^2-8x+12$

$\frac{\left(6x^3+27x^2+12x\right)}{\left(x-3\right)}$

$1388+241$

$190n^8-30n^4$

$\left(-25\right)\cdot\left(+40\right)\cdot0$

$\int x^5\sqrt{3+5x^3}dx$

$\lim\:_{x\to\:\:a}\left(\frac{cos\left(x\right)\cdot\:\:in\left(x\right)-a}{in\left(e^x-e^a\right)}\right)$