If xy does not equal zero, what is the value of xy?
(1) (2/x) + (2/y) = 3
(2) x^3 – (2/y)^3 = 0
I thought the answer was D because:
S1. (2/2) + (2/1) = 3 & (2/1) + (2/2) = 3
x = 2 y = 1
x = 1 y = 2
xy = 2
S2. x^3 = (2/y)^3
x^3 = 8 / (y^3)
x^3y^3 = 8
xy = 2
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