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[" Question No."10.],[" If "d,e,f" are i...

[" Question No."10.],[" If "d,e,f" are in "GP" and the two quadratic equations "ax^(2)+2bx+c=0" and "dx^(2)+2ex+f=0" have a common root,then "],[square(d)/(a),(e)/(b),(f)/(e)" are in HP "],[square(d)/(a),(e)/(b),(f)/(e)" are in GP "],[square2dbf=aef+cde],[square b^(2)df=ace^(2)]

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