$2x^{2}+8x-6$
$mn=2$
$\frac{x}{9}-4=-2$
$\left(-2\right)\:x\:\left(+3\right)$
$36x^2-27$
$x^2-3x+8>0$
$\int\:\frac{1}{2}s^{10}\:ds$
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