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If one zero of a quadratic …

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If one zero of a quadratic polynomial p(x) =4x2-8kx-9 is negative of the other , find value of k

    • Posted by Sowmya Sowmya 4 years, 4 months ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    Sia ? 4 years, 4 months ago

    Let α and β be the zeros of the polynomial 4x²-8kx-9
    It is given that α=-β
    Then, α+β=0
    -b/a=0
    -(coefficient of x)/coefficient of x²=0
    8k/4=0
    2k=0
    k=0

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