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 Enlightened First to answer and accepted with score of 10 or more. This badge can be awarded multiple times.

Dan Shved earned this badge 2 times
feb 23 at 13:41
solving $\sqrt{3-\sqrt{3+x}}=x$.
nov 16 at 11:15
Does $x_1^3+x_2^3+\dots+x_n^3+x_1+x_2+\dots+x_n=0$ implies $x_1+x_2+\dots+x_n=0$

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