$x-y-2x+3y$
$\:9\:x\:+\:7\:>\:79\:$
$5x=3-2x^{2}$
$5m^2+20m+4^2$
$x-7<-1$
$x^3y^2-16x^3$
$\left(a-4b^3\right)\left(a^2+4ab^3+16b^6\right)$
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