$975-28$
$2x-9\le x+4$
$\frac{-2p^3q^2}{-3p^3q^2r^3}$
$cos\left(180-x\right)$
$3^2.3^7$
$8w^7\left(2w^2\right)$
$x^{+10x+252}$
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