$\sqrt[3]{\left(-3\right)^9}$
$22\left(-3x+9\right)$
$15-3\cdot4$
$200mn^3-50mn^2$
$\left(5zx-3a\right)^2$
$\frac{x+9}{x-9}>-2$
$x^2-\frac{1}{6}x$
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