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Expression and Perfect Square (Posted on 2015-10-10) Difficulty: 3 of 5
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.

No Solution Yet Submitted by K Sengupta    
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  Subject Author Date
SolutionSolutionBrian Smith2019-03-23 00:55:46
Some ThoughtsFalsebroll2015-10-11 13:42:14
Some ThoughtsThoughtsJer2015-10-11 09:43:26
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