$-15+132$
$x^3-512$
$2\cdot\frac{x}{3}$
$x^2+\left(x+1\right)^2=41$
$\int x\left(x^2+\frac{4}{7}\right)^{-4}dx$
$x^2-16x-4$
$500\:-\:230$
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