If \[a+\frac{1}{a}=6,\] then the value of \[\left( a-\frac{1}{a} \right)\] is

If \[a+\frac{1}{a}=6,\] then the value of \[\left( a-\frac{1}{a} \righ

1.	If \[a+\frac{1}{a}=6,\] then the value of \[\left( a-\frac{1}{a} \right)\] is
A.	\[\sqrt{32}\]
B.	\[\sqrt{49}\]
C.	\[\sqrt{140}\]
D.	None of these
Answer» B. \[\sqrt{49}\]

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If \[a+\frac{1}{a}=6,\] then the value of \[\left( a-\frac{1}{a} \right)\] is

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