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Homework Help: Proof of Perfect Squares

  1. Jan 28, 2009 #1

    In order for p to be a perfect square, r must be even. Therefore


    taking the square root of both sides i'm just left with


    Does this work as a proof that n is a perfect square if r is even? It's a homework problem and I'm not sure if this is sufficient or correct at all.
  2. jcsd
  3. Jan 28, 2009 #2


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    If the p's are distinct primes, it's true the r's must be even for n to be a perfect square, but you haven't proved it. You haven't even stated the problem coherently. What's p?
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