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[a^(4)quad a^(3)quad a^(2)],[" If the su...

[a^(4)quad a^(3)quad a^(2)],[" If the sum of the roots of the equation "ax^(2)+bx+c=0],[" is equal to sum of the squares of their reciprocals,"],[" then "bc^(2),ca^(2),ab^(2)" are in "],[[" 1) A.P."," 2) G.P."," 3) H.P."4" ) A.G.P "],[" 1"]]

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