$9x^3-27x^2-x$
$\left(-3\right)\left(-1\right)\left(-2\right)\left(-2\right)$
$2a^2b+7bxy5$
$4\left(-5+8b\right)-8b$
$\log\left(3x+5\right)-\log\left(x-3\right)=1$
$4-\left(2-3m\right)^2$
$\left(5a+1\right)^2$
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