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No integer solutions (Posted on 2012-12-10) Difficulty: 2 of 5
Prove that the equation 15x2-7y2=9 has no integer solutions.

No Solution Yet Submitted by Ady TZIDON    
Rating: 3.0000 (2 votes)

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slower this time Comment 4 of 4 |
(In reply to A slightly faster not so fast by Steve Herman)

Yep, I didn't demonstrate that the equation implied both x and y were divisible by 3.  Thanks for fleshing that out.
  Posted by xdog on 2012-12-10 20:15:42

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