If `1lt(x-1)/(x+2)lt7` then find the range of
`(i) x` `(ii) x^(2)` `(iii) (1)/(x)`

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Correct Answer - `(i) (-oo,-(5)/(2))` `(ii) ((25)/(4),oo)` `(iii) -(2)/(5),0)`

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