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bmwhype2
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GMATprep - abs val 27 Feb 2008, 22:35
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see below



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GMATprep - abs val 27 Feb 2008, 22:42
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A.

I was tempted to pick D but then thought sqrt of any number in GMAT is usually positive.
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GMAT TIGER
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GMATprep - abs val 28 Feb 2008, 01:58
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bmwhype2
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yes, it is A.

Since sqrt[(-x)lxl] is +ve, -x is also +ve.
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gmatnub
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GMATprep - abs val 28 Feb 2008, 02:13
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i hate these type of questions, i am not sure what is the point of asking these gotcha questions.
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bmwhype2
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GMATprep - abs val 28 Feb 2008, 11:54
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bmwhype2
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yes, it is A.

Since sqrt[(-x)lxl] is +ve, -x is also +ve.
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given that x is negative...
|x| must be positive
-(x) must be positive

so we have (positive X)*(positive X) under the radical

so why dont we have x^2 under the radical, leaving us with |x|



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