$3\sqrt{-512}$
$7\cdot2+3\cdot3-2\cdot5$
$2\cos^2\left(12b\right)-1$
$8a^2\left(a^2+3ab-5b^2\right)$
$\left(-x^2-5x+6\right)$
$5\left(x+3\right)+13<x+88$
$-6x^{2}+7x+4x^{2}-3x-3y-2x+4x^{2}$
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