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[" 25.If "a,b,c" and "d" are in G.P.show...

[" 25.If "a,b,c" and "d" are in G.P.show that "],[(a^(2)+b^(2)+c^(2))(b^(2)+c^(2)+d^(2))=(ab+bc+cd)^(2)]

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If a,b,c,d are in G.P.show that: (ab+bc+cd)^(2)=(a^(2)+b^(2)+c^(2))(b^(2)+c^(2)+d^(2))

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