$\frac{d}{dq}\left(512+11q+2q^2\right)$
$14abc-21bcd-35acm$
$x-481=329$
$c\left(19d-7d^2\right)+8cd-4cd^2$
$144m^2-72mp+9p^2$
$\frac{dy}{dx}-x.y=3.x$
$2\frac{1}{6}-5\frac{2}{3}$
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