$\left(2m^2+n\right)^2$
$\left(k-4n\right)\left(k-3n\right)$
$3x^4-75x^2+432=0$
$\frac{dy}{dx}xtany$
$18a^2\:-61ab-8a^2+210-51ab-31+a^3-3ab$
$3y^5+6y^3-45y$
$45\cdot\left(-10\right)$
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