$\frac{m^2+49}{m-7}$
$\:24x^2-144x-648$
$8-2\left(x+3\right)$
$\lim_{x\to1}\left(2x^2+2x+4\right)$
$\left(a^4+a^3b+a^3b^2+ab^3+b^4\right)\left(a-b\right)$
$\left(k\:+3q\right)\left(k\:-\:q\right)$
$\frac{dx}{dt}=\sqrt{100-\frac{2x^2}{10}}$
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