Bunuel wrote:
If xy = 3, what is the value of xy(x + y) ?
(1) x – y = 2
(2) x^2 + y^2 = 10
(1) x – y = 2
Let x =-1 , y=-3......... x – y = 2............3 (-4) = -12
Let x= 3 , y= 1......... ..x – y = 2............3 (4) = 12
Two values
Insufficient
(2) x^2 + y^2 = 10
Use same examples above
Insufficient
Combine 1 &b2
Use same examples above
No clear soution
Insufficient
Answer: E







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