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If the roots of the equation (x^2-b x)/(...

If the roots of the equation `(x^2-b x)/(a x-c)=(m-1)/(m+1)` are equal to opposite sign, then the value of `m` will be (A) `(a-b)/(a+b)` (B) `(b-a)/(a+b)` (C) `(a+b)/(a-b)` (D) `(b+a)/(b-a)`

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