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Question
Evaluate the following:
`(64)^(-3/2)`
Evaluate
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Solution
Given: `(64)^(-3/2)`
Step-wise calculation:
1. Write 64 as a power of 2:
64 = 26
2. Substitute in the expression:
`(64)^(-3/2) = (2^6)^(-3/2)`
3. Use the power of a power property (am)n = am × n:
`(2^6)^(-3/2) = 2^(6 xx (-3/2))`
`(2^6)^(-3/2) = 2^-9`
4. Convert negative exponent to reciprocal:
`2^-9 = 1/2^9`
5. Calculate (29):
29 = 512
So, `(64)^(-3/2) = 1/(512)`.
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Chapter 6: Indices/Exponents - Exercise 6B [Page 131]
