$-x^2-12x+9$
$\left(m^3\:-\:1\right)^2$
$3\left(5x+1\right)+2\left(x+5\right)$
$\left(a^4-5b^2\right)^2$
$\frac{4}{3}x-2x+x$
$\cot\left(2x^3+1\right)$
$x^2-x+7$
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