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Simplify each of the following : [{((-1...

Simplify each of the following : `[{((-1)/5)^(-2)}^2]^(-1)\ ` (ii) `{(1/3)^(-2)-\ (1/2)^(-3)}-:(1/4)^(-2)`

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(i)`[{((-1)/5)^(-2)}^2]^(-1) `
`{(5^2)^2}^-1`
`{(25)^2}^-1`
`625^-1`
`1/625`
(ii)`{(1/3)^(-2)-\ (1/2)^(-3)}-:(1/4)^(-2)`
`{3^2-2^3}-:4^2`
`(9-8)-16`
`-15`
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