$\frac{dx}{dy}=2xe^{-y}$
$2n^3-4n-2$
$2x-2y$
$\left(-482\right).\left(25\right).\left(-2\right).\left(13\right).\left(0\right)$
$\left(100-200\right)\cdot\left(2\right)+\left(3-40\right)$
$x^6-25=0$
$6x^2+7+2$
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