if xy>0 does (x-1)(y-1) >1
I know that A is sufficient.. i thought B will be sufficient too. as we are substituting x=y.. why is it not sufficient...
Putting x=y, LHS = (x-1)^2
Example x = 1, LHS = 0, which is less than 1
x = 3, LHS = 4, which is greater than 1
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