If \[|a|\,=\,|\mathbf{b}|,\] then \[(a+b)\,.\,(a-b)\] is [MP PET 2002]

If \[|a|\,=\,|\mathbf{b}|,\] then \[(a+b)\,.\,(a-b)\] is �

1.	If \[\|a\|\,=\,\|\mathbf{b}\|,\] then \[(a+b)\,.\,(a-b)\] is [MP PET 2002]
A.	Positive
B.	Negative
C.	Zero
D.	None of these
Answer» D. None of these

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If \[|a|\,=\,|\mathbf{b}|,\] then \[(a+b)\,.\,(a-b)\] is [MP PET 2002]

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