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If α, β are roots of ax^2 + 2bx + c = 0 and γ, δ are the roots of px^2 + 2qx + r = 0.

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If α, β are roots of ax2 + 2bx + c = 0 and γ, δ are the roots of px2 + 2qx + r = 0. If α, β, γ, δ are in A.P., then (b2 - ac)/(q2 - pr) equals 

(a) a2/p2 

(b) b2/q2

(c) c2/r2 

(d) None of these

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Correct option (a)

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