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Simplify: - Mathematics

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Question

Simplify:

`[(64)^-2]^-3÷[{(-8)^2}^3]^2`

Sum

Solution

`[(64)^-2]^-3÷[{(-8)^2}^3]^2`

`=(2^6)^(-2xx-3÷(-8)^(2xx3xx2`

`=2^(6xx(6)÷(-8)^12`

`=2^(+36)÷(-8)^12`

`=2^(+36)÷[(-2)^3]^12=2^36÷(-2)^36`

`=2^36/(-2)^36=2^36/2^36`    (∵36 is even)

`=2^(36-36)=2^0=1`   (∵ `"a"^0=1)`

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More About Exponents
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Chapter 2: Exponents - Exercise 2 (B) [Page 33]

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Selina Concise Mathematics [English] Class 8 ICSE
Chapter 2 Exponents
Exercise 2 (B) | Q 2.2 | Page 33
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