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Evaluate. (12)-5 - Mathematics

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Question

Evaluate.

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

Evaluate

Solution

`(1/2)^(-5) = (2/1)^5`             ...`[∵ (1/b)^-m = (b/a)^m]`

= `(2 xx2 xx 2xx2xx 2)/(1 xx 1xx 1xx 1xx1)`

= `32/1`

= 32

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Chapter 12: Exponents and Powers - Exercise 12.1 [Page 197]

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NCERT Mathematics [English] Class 8
Chapter 12 Exponents and Powers
Exercise 12.1 | Q 1.3 | Page 197

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