$1x^3-5x^2-2x+8$

$-1-\left\{1-\left[-1-\left(-1\right)+1\right]-1+\left(-1\right)\right\}$

$\int\left(x\cdot sin\left(x^2+6\right)\right)dx$

$\frac{dy}{dx}=\frac{-x}{y},y\left(4\right)=3$

$\left(12x-5y\right)\left(12x+5y\right)$

$8a^2b+12ab-4a^3b^2-6a^5b^3-12a^2b^3$

$\frac{\left(\left[\frac{x}{x+1}\right]-\frac{8}{9}\right)}{x-8}$