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Simplify: (i){4^(-1)xx 3^(-1)}^2 (ii) ...

Simplify: (i)`{4^(-1)xx 3^(-1)}^2` (ii) `{5^(-1)-:6^(-1)}^3` (iii)`(2^(-1)+\ 3^(-1))^(-1)` (iv) `{3^(-1)xx\ 4^(-1)}^(-1)\ xx\ 5^(-1)` (v)`(4^(-1)-\ 5^(-1))-:3^(-1)`

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Verified by Experts

(i)`{4^(-1)xx\ 3^(-1)}^2`
`(1/4xx1/3)^2`
`(1/12)^2`
`1/144`
(ii) `{5^(-1)-:6^(-1)}^3`
`(1/5xx6)^3`
`(6/5)^3`
`216/125`
(iii)`(2^(-1)+\ 3^(-1))^(-1)`
`(1/2+1/3)^-1`
`(5/6)^-1`
`=6/5`
(iv) `{3^(-1)xx\ 4^(-1)}^(-1)\ xx\ 5^(-1)`
`(1/3xx1/4)^-1 xx1/5`
`12/5`
(v) `(4^(-1)-\ 5^(-1))-:3^(-1)`
`(1/4-1/5)xx3`
`1/20xx3`
`3/20`
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