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Question: Answered & Verified by Expert
If $2+i \sqrt{3}$ is a root of the equation $x^2+p x+q=0$, where $p$ and $q$ are real, then $(p, q)=$
MathematicsQuadratic EquationJEE Main
Options:
  • A $(-4,7)$
  • B $(4,-7)$
  • C $(4,7)$
  • D $(-4,-7)$
Solution:
1652 Upvotes Verified Answer
The correct answer is: $(-4,7)$
Since $2+i \sqrt{3}$ is a root, therefore $2-i \sqrt{3}$ will be other root. Now, sum of the roots $=4=-p$ and product of roots $=7=q$. Hence $(p, q)=(-4,7)$

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