If 6xy = x2y + 9y, what is the value of xy?
(1) y – x = 3
(2) x3 < 0
Friends, I solved this problem by the foll. approach:
6xy = x2y + 9y
Divide by Y
=>6X = x^2 + 9
=> (X-3)^2 = 0
=> X = 3
So 1 alone is suff. But thats not the OA.
I think I am wrong somewhere in the above approach.I would appreciate if someone can point the mistake that I have made.
Thanks,
Arun B


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