$\left(m-68\right)\left(m-55\right)$

$\int\left(\frac{x^3+4x^2-1}{\sqrt{x}}\right)dx$

$\lim_{x\to-\infty}\frac{4x+3}{5x^3+3}$

$\lim_{x\to\infty}\left(\frac{\left(3-\sqrt{x^2-1}\right)}{2x+5}\right)$

$f\left(x\right)=4-x^2\:en\:\left[-2,2\right]$

$9-\left\{6-\left[\left(-32\:-\:15\:+8\right)-22\:\right]-7\right\}$

$a^{20}-2a^{10}b^5+b^{10}$