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Find the value of k so …

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Find the value of k so that the zeros of the quadratic polynomial 3x^2-kx+14are the ratio 7:6

    • Posted by Sarika Popli 6 years, 10 months ago

    CBSE > Class 10 > Mathematics
    • 3 answers

    Puja Sahoo? 6 years, 10 months ago

    let the roots are 7x and 6x. So, sum of roots are 13x , but sum of roots is also -b/a and -b/a = -(-k)/3 So, 13x=k/3 39x=k and product of roots are c/a=42x2 14/3 =42x2 So,x2=1/9 So, x=1/3 So, k=39/3 So, k=13............

    2Thank You

    Shyam Thakur 6 years, 10 months ago

    Give full solution

    1Thank You

    Puja Sahoo? 6 years, 10 months ago

    K=13......

    2Thank You

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