The rationalising factor of \[(a+\sqrt{b})\]is

1.	The rationalising factor of \[(a+\sqrt{b})\]is
A.	\[a-\sqrt{b}\]
B.	\[\sqrt{a}-b\]
C.	\[\sqrt{a}-\sqrt{b}\]
D.	None of these
Answer» B. \[\sqrt{a}-b\]

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The rationalising factor of \[(a+\sqrt{b})\]is

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