$-4-\:\left(23-21\right)-\left(18\right)$
$\int_{-3}^3\left(x^{-2}\right)dx$
$\left(-10\right)-\left(-24\right)$
$\left(\frac{2}{3}z+3\right)^4$
$1=3$
$\int\frac{-3}{\left(x+4\right)}dx$
$\frac{512a^9+b^9}{1-a}$
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