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प्रश्न
Value of `root(4)((81)^-2)` is ______.
विकल्प
`1/9`
`1/3`
9
`1/81`
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उत्तर
Value of `root(4)((81)^-2)` is `underlinebb(1/9)`.
Explanation:
`root(4)((81)^-2) = root(4)((1/81)^2`
= `(1/81)^(2 xx 1/4)`
= `(1/81)^(1/2)`
= `1/9`
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