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Rational Rigor II (Posted on 2013-03-16) Difficulty: 3 of 5
Determine all possible rational numbers r such that 3r3 +10r2 - 3r is an integer.

No Solution Yet Submitted by K Sengupta    
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Some Thoughts re(2): allof tem - spoiler Comment 3 of 3 |
(In reply to re: allof tem - spoiler by broll)

I have solved it on-line, then  posted, then checked, found my error and edited and now I see - how fast my mistake was discovered.

Anyway, it was fun + happy ending.

Edited on March 17, 2013, 6:30 am
  Posted by Ady TZIDON on 2013-03-17 06:27:58

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