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can 3X=Y with both x and y being square #'s? this will help answer the "Is there a perfect cuboid?" question.

 Apr 11, 2017
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Im not 100% sure i understood your question, but if i did, then the answer is no (There are no integers x and y that satisfy 3*x2=y2).

 

But this is not going to help you determine whether perfect cuboids exist. That question is a little harder than that.

 Apr 11, 2017
edited by Ehrlich  Apr 11, 2017

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