$2\left(a^3+ab^2\right)$
$a^6b^3+125a^9$
$\left(2x-3y\right)\left(2x+4z^2\right)$
$\int\left(\frac{e^{18x}}{18}\right)\left(2x\right)dx$
$2\sin\left(7x\right)=-1$
$\left(-2\right)\left(-2\right)\left(-2\right)\left(-3\right)\left(-1\right)$
$9\:-\:36x\:$
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