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Unequally Yoked II (Posted on 2008-07-19) Difficulty: 3 of 5
Determine all possible nonzero integers A and B, with A ≠ B, that satisfy this equation.

                                         AB = BA-B

See The Solution Submitted by K Sengupta    
Rating: 4.0000 (1 votes)

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Set of integers that satisfy the equation (partial spoiler) | Comment 1 of 4

There are at least six pairs of integers (A,B) that satisfy the equation AB = BA-B:
(-8,-2), (1,-1), (0,0), (1,1), (8,2), and (9,3).

(0,0) and (1,1) satisfy the equation, yet the set (0,0) is not a set of non-zero integers, and both (0,0) and (1,1) are cases where A = B, thus neither are one of set of values that is part of the final solution. 

Edited on July 20, 2008, 7:40 pm
  Posted by Dej Mar on 2008-07-19 22:32:45

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