1.

If m is a root of the given equation (1−ab)x2−(a2+b2)x−(1+ab)=0 and m harmonic means are inserted between a and b, then the difference between the last and the first of the means equals

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If m is a root of the given equation (1ab)x2(a2+b2)x(1+ab)=0 and m harmonic means are inserted between a and b, then the difference between the last and the first of the means equals




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