3. What is the value of:
![\sqrt[4]{81 { }^{ - 2} } \sqrt[4]{81 { }^{ - 2} }](https://tex.z-dn.net/?f=+%5Csqrt%5B4%5D%7B81+%7B+%7D%5E%7B+-+2%7D+%7D+)
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Answer:
just simply take powers out .hope it helps
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