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Prove that : If |x| is so small that x^(...

Prove that : If `|x|` is so small that `x^(3)` and higher powers or x can be neglected, find approximate value of `((4-7x)^(1//2))/((3+5x)^(3))`.

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The correct Answer is:
`(2)/(27) (1-(47)/(8)x +(7933)/(384)x^(2))`
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