$3n^2+2\left(3n\right)\left(2m\right)+2m^2$
$-41-98$
$\frac{dy}{dx}\left(ax^3-y^2\right)\:$
$\sqrt[4]{3.1416}$
$\lim_{x\to8}\left(\frac{5x^2-9x+22}{2x^2+7}\right)$
$-x^2+10x-9\ge0$
$4.7x-5.9x$
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