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If a, a1 ,a2----a(2n-1),b are in A.P an...

If `a, a_1 ,a_2----a_(2n-1),b` are in `A.P and a,b_1,b_2-----b_(2n-1),b` are in `G.P and a,c_1,c_2----c_(2n-1),b` are in `H.P` (which are non-zero and a,b are positive real numbers), then the roots of the equation `a_nx^2-b_nx |c_n=0` are

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