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JEE Main & Advanced Mathematics Complex Numbers and Quadratic Equations Question Bank Solution of quadratic equations and Nature of roots

  • question_answer
    For what values of k will the equation\[{{x}^{2}}-2(1+3k)x+\]\[7(3+2k)=0\] have equal roots   [MP PET 1997]

    A) \[1,-\frac{10}{9}\]

    B) \[2,-\frac{10}{9}\]

    C) \[3,-\frac{10}{9}\]

    D) \[4,-\frac{10}{9}\]

    Correct Answer: B

    Solution :

    On checking, the condition is satisfied for\[k=2\].


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