$42+42+42+42$
$\left(np-11\right)^3$
$\frac{\left(-9-11\right)}{-4}$
$\frac{d}{dx}\left(7x^{4x}\right)$
$64x^{14}\:-128x^7y^2+256y^4$
$\frac{q^2q^5}{q^7}$
$\frac{dy}{dx}+\frac{y}{x}=\:3x^2y$
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