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| Expression and Perfect Square (Posted on 2015-10-10) |
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Each of X, Y and Z is a nonzero integer such that:
Z = X + Y/X – 1/Y is an integer.
Is Z always a perfect square?
Give reasons for your answer.
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Subject |
Author |
Date |
 | Solution | Brian Smith | 2019-03-23 00:55:46 |
 | False | broll | 2015-10-11 13:42:14 |
| Thoughts | Jer | 2015-10-11 09:43:26 |
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