Dear all

I have a question in inequality DS which is as follows

If √(xy) = xy, what is the value of x + y? (1) x = -1/2 (2) y is not equal to 0.

My approach is ((XY)^1/2 )^2= (XY )^2 and hence XY= (XY)^2 and hence XY =1 . Therefore it looks 1) X =-1/2 is sufficient to answer the question.

However this is not true . Without telling the answer, I request you to clarify whether the approach is right . If not, then what is the right approach?

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