$\frac{dy}{dx}\cos\left(x\right)+y\sec\left(x\right)=y\sin\left(x\right)$
$n2-8n+16$
$2-\left|4\right|-\left|6\right|$
$w^2+7w+12=0$
$4\left(\frac{x}{6}+5\right)$
$\left(3x-5y+7z\right)\left(2x-3y\right)$
$3-2x\le8+4x$
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