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If sum of the squares of zeros of the quadratic polynomial f(x)=x²+6x-k is 30 the value of k is?

    • Posted by Shweta Chaudhary 3 years, 1 month ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    Vishal Yadav 3 years, 1 month ago

    Let a and b the zeros then a+b=6 and ab=k Given a squares + b squares=30 (a+b)ka whole squares - 2ab=30 36-2k=30 -2k=30-36 -2k=-6 K=3

    2Thank You

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