Here, the answer is a>b and a is positive. But in my opinion a>b does not have to be true. If we take x=0.5 and y=0.5, then a=1 and b=1. Can anyone else me with this?
Hi there, I suggest that you don’t try number here. Pure math can give the most powerful explanation.
a=x^2+y^2+2xy
b=x^2+y^2,
where xy>0 , the result of comparison is clear.
My question is why is the solution assuming that x is not equal to y? That isn’t stated anywhere. If x=y, then clearly a=b.
You are correct. I admire your intelligence.
which of the following MUST be true
So, if a statement is true for a singular case then it will not be selected
Besides, when x = y =0.5
a = 1
b = 0.25 + 0.25 = 0.5
So, the premise on which you are saying that option 1 is correct is also wrong to begin with
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