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If y= ((1-x)^2)/(x^2) then (dy)/(dx) is ...

If `y= ((1-x)^2)/(x^2)` then `(dy)/(dx)` is ………………. .

A

`2/(x^2) + 2/(x^3)`

B

`- 2/(x^2) + 2/(x^3)`

C

`- 2/(x^2) - 2/(x^3)`

D

`- 2/(x^3) + 2/(x^2)`

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