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Which of the following is a true statement?

(A) The quadratic equation $ x^2+x+1=0$ has two real roots. (B) $ (2+\sqrt 3)$ is a complex number. (C) Every real number is a complex number. (D) none of these
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Ans : (D)

None of these
answered Jan 21, 2014 by thanvigandhi_1

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