$\left(ax+b\right)\left(a^2x^2-axb+b^2\right)$
$9x^2-12x-32$
$\frac{1}{1-5\left(x+6\right)^2}$
$2x\:+\:7n\:+\:11x\:+\:3\:+5n$
$81x\left[4\right]$
$13\cdot10^5$
$4\cdot5^3-2\cdot\left(-3^2\right)-5\cdot\left(-1^4\right)-3$
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