$\frac{x^3+x^2+x}{\left|x-2\right|-1}$

$\lim_{x\to-7}\left(5x+7\right)$

$\frac{x^2+4x-8}{x+3}$

$l.\left(a\:+\:b\right)\left(a\:-\:b\right)$

$\lim_{t\to5}\frac{t^2+10t+25}{t+5}$

$\int\frac{x^2+5x+6}{6x^2-7x-3}dx$

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