$-3\:\:x\:\:\left(\left(-2\:\:x\:\:-4\right)\right)$
$x^2+2x<x+2$
$\left(u-v-3\right)\left(u-v+3\right)$
$\left(2m-3p\right)^3$
$-2x^2+2x^2$
$2-8+70$
$\frac{6x\:3\:+11x\:2\:+24x+7}{3x+1}$
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