• # question_answer If one root of a quadratic equation is $\frac{-1+\sqrt{3}}{2}$ then the sum of the roots is: A) $-i$                B) $i$             C) $\sqrt{3}$                                D) $\frac{\sqrt{3}}{2}$

Correct Answer: A

Solution :

[a] One root of quadratic equation be $\frac{-1+\sqrt{3}}{2}$ Other root of quadratic equation be $\frac{-1-\sqrt{3}}{2}$ Sum$=\frac{-1}{2}-\frac{1}{2}=-1$ Hence, option [a]is correct.

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