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Question
Solve: `(7^(- 2))^(-5)`
Sum
Solution
`(7^(- 2))^(-5)`
`= 1/(7^(- 2))^5`
`= 1/(7^(- 2) xx 7^(- 2) xx 7^(- 2) xx 7^(- 2) xx 7^(- 2))`
`= 1/(7^((- 2) xx 5))`
`= 1/7^(- 10)`
`= 7^10`.
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