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If d,e,f are G.P. and the two quadratic equations `ax^(2)+2bx+c=0anddx^(2)+2ex+f=0` have a common root, then

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If d,e,f are G.P. and the two quadratic equations
`ax^(2)+2bx+c=0anddx^(2)+2ex+f=0` have a common root, then
A. `(d)/(a),(e)/(b),(f)/(c)` are in H.P.
B. `(d)/(a),(e)/(b),(f)/(c)` are in G.P.
C. dbf=aef+cde
D. `b^(2)df=ace^(2)`
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Correct Answer - A
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