$\frac{-2}{2}+3$
$216x^3-27$
$\left(b+9\right)\left(b-2\right)$
$\frac{a^{-4}}{4a^6}$
$-3xy^2+7xy^2-5xy^2+9xy^2$
$\int\frac{1}{\frac{17}{16}-\frac{cos\left(x\right)}{2}}dx$
$\left(0.2z^4-8\right)^3$
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