If the roots of the equation ab-c x2-bc-a x-ca-b-0 are equal- then a- b- c are inA- APB- GPC- HPD- None of these

The correct option is C HPx = 1, satisfy a(b c)x^2 + b(c a)x + c(a b) = 0 ∴α = β = 1 ⇒ c(a b) = a(b c) or b =2ac/a+c ∴ a, b, c are in HP. ...

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Discriminant

If the roots ...

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If the roots of the equation $a (b - c) x^{2} + b (c - a) x + c (a - b) = 0$ are equal, then a, b, c are in

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None of these

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