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Simplify: `(16^(-1/5))^(5/2)` - Mathematics

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Question

Simplify:

`(16^(-1/5))^(5/2)`

Solution

Given `(16^(-1/5))^(5/2)`

`(16^(-1/5))^(5/2)=16^(-1/5xx5/2)`

`=16^(-1/2)`

By using law of rational exponents `a^-n=1/a^n` we have

`(16^(-1/5))^(5/2)=1/16^(1/2)`

`=1/4^(2xx1/2)`

`=1/4`

Hence the value of `(16^(-1/5))^(5/2)` is `1/4`

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Chapter 2: Exponents of Real Numbers - Exercise 2.2 [Page 24]

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RD Sharma Mathematics [English] Class 9
Chapter 2 Exponents of Real Numbers
Exercise 2.2 | Q 2.1 | Page 24

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