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(2/3)^(-5)x(5/7)^(-5) is equal to (a)(2...

`(2/3)^(-5)`x`(5/7)^(-5)` is equal to (a)`(2/3`x`5/7)^(-10)` (b) `(2/3`x`5/7)^(-5)` (c) `(2/3`x`5/7)^(25)` (d) `(2/3`x`5/7)^(-25)`

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Verified by Experts

`=(2/3)^(-5)`x`(5/7)^(-5)=(2/3`x`5/7)^(-5)`
Hence, option (b) is the correct answer.
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