$\frac{dm}{dg}=-\frac{1}{5}\sqrt{m}$
$x^2-8x+7=0$
$2m-2+\left(m-n\right)x$
$\left(x^2+2x+3\right)x\:\left(-x^2+x+4\right)$
$\left(6-z^2\right)\left(z^3-5z+2\right)$
$a^2-a-1$
$x^5-5x^4+6x^3$
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