If \( a, b, c \) are in A.P. the roots of the equation \( a x^{2}+2 b x+c \) \( =0 \) are (a) Re...

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If \( a, b, c \) are in A.P. the roots of the equation \( a x^{2}+2 b x+c \) \( =0 \) are
(a) Real and distinct
(b) Real and equal
(c) Real
(d) Imaginary
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