$365+284+791$
$3x^2+18x-17=0$
$7a+10b-9a-b$
$6x^2\:+\:4x\:-3y\:+31=0$
$6x^2-13x+7-2x-11x$
$\left(2xy^2+9xy^3\right)\left(2xy^2+9xy^3\right)$
$-7-\left(-25\right)$
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