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Simplify: (i)\ (16^(-1/5))^(5/2) (ii...

Simplify: `(i)\ (16^(-1/5))^(5/2)` `(ii)\ (32)^(-3/5)` `(iii)\ (343)^(-2/3)`

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(i) `(16^(-1/5))^(5/2)`
`=16^((-1/5xx5/2))`
`=16^(-1/2)`
`=4^((2xx-1/2))`
`=1/4`

(ii) `32^(-3/5)`
`=2^((5xx-3/5))`
`=2^(-3)`
`=1/8`

(iii) `343^(-2/3)`
`=7^((3xx-2/3))`
`=7^(-2)`
`=1/49`
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