Difference between revisions of "1989 APMO Problems/Problem 2"
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Latest revision as of 17:25, 16 August 2023
Problem
Prove that the equation![\[6(6a^2 + 3b^2 + c^2) = 5n^2\]](http://latex.artofproblemsolving.com/4/5/d/45d83d8c67f16615d5a2c57a5f28576561723b4a.png)
has no solutions in integers except 
.
Solution
We barybash
