Find the set E of the vlaues of x for wh...

Find the set E of the vlaues of x for which the binomia expansions for the following are valid `(i) (3-4x)^((3)/(4)) " " (ii) (2+5x)^((-1)/(2)) " "(iii) (7-4x)^(-5)`

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The correct Answer is:

`(i) E=(-(3)/(4), (3)/(4))" "(ii) E=(-(2)/(5), (2)/(5))" "(iii) E=(-(7)/(4), (7)/(4)) `

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