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**jacks****Member**- Registered: 2012-11-21
- Posts: 80

Integer values of

for which is a perfect square.*Last edited by jacks (2013-09-30 07:01:16)*

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 86,219

You have 2 x^2's.

**In mathematics, you don't understand things. You just get used to them.Of course that result can be rigorously obtained, but who cares?Combinatorics is Algebra and Algebra is Combinatorics.**

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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 15,518

Hi jacks

3 is the only one in the first 100 000 positive integers. If we allow non-negative integers as well, there are also 0 and 1. Those are the only ones I can find, and I'd say the only ones that are the solutions.

Here lies the reader who will never open this book. He is forever dead.

Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment

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**jacks****Member**- Registered: 2012-11-21
- Posts: 80

To friends I have edited by Question.

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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 15,518

Hi jacks

My post above still applies. I don't have a way to prove that are the only answers...

Here lies the reader who will never open this book. He is forever dead.

Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment

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