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The rationalizing factor of nsqrt(a/b) ...

The rationalizing factor of `nsqrt(a/b)` is

A

`root(n)((a)/(b))`

B

`sqrt((a)/(b))`

C

`root(n)((a^(n+1))/(b^(n+1)))`

D

`root(n)((a^(n-1))/(b^(n-1)))`

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The correct Answer is:
D
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