Prove that , p an odd prime.

My attempt:

If ,

and the result follows immediately.

But what if ?

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- Jul 21st 2011, 01:48 AMalexmahoneQuadratic reciprocity
Prove that , p an odd prime.

**My attempt:**

If ,

and the result follows immediately.

But what if ? - Jul 21st 2011, 03:51 AMmeleseRe: Quadratic reciprocity