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Let $p$ be an odd prime $p > 3$. What is $\dfrac{-2}{p}$?

I need some help with this problem

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    If this is from an assignment, probably $(2/p)$ was already done in class, and you know about $(-1/p)$. You can combine these two pieces of knowledge to get to $(-2/p)$.2012-11-28

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