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Curious Cubic Constant (Posted on 2009-05-02) Difficulty: 3 of 5
Determine the minimum value of a positive integer constant c such that the equation xy3 - y3+ x + y = c has precisely four distinct solutions in positive integers.

See The Solution Submitted by K Sengupta    
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  Subject Author Date
SolutionSmallest c for 1,2,3,4,5,6 distinct solutionsBrian Smith2016-07-03 19:51:22
Rectangular grid (Spoiler)Harry2009-05-02 22:57:28
computer solutionDaniel2009-05-02 20:14:02
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