lf a and b are distinct positive real numbers such that a,a1,a2,a3,a4,a5,b are in A.P., a,b1,b2,b3,b4,b5,b are in G.P. and a,c1,c2,c3,c4,c5,b are in H.P., then the roots of a3x2+b3x+c3=0 are
A
real and distinct
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B
real and equal
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C
imaginary
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D
rational
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Solution
The correct option is C imaginary We know that (GM)2=(AM)(HM)