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The value of root 4((81)^(-2)) is...

The value of `root 4((81)^(-2))` is

A

`1/9`

B

`1/3`

C

9

D

`-1/9`

Text Solution

Verified by Experts

The correct Answer is:
A
`root4((81)^(-2))=root4(1/((81)^(2)))=1/((81)^(2//4))=1/((81)^(1//2))`
`1/((g^(2))^(1//2))=1/(g^(2//2))=1/9`
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