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If one root is negative to …

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If one root is negative to other of equation 4x2–8xk–9=0 .find the value of K .

    • Posted by Sakshi Priya 4 years, 8 months ago

    CBSE > Class 10 > Mathematics
    • 2 answers

    Gaurav Seth 4 years, 8 months ago

    Comparing f(x) = 4x2 - 8kx - 9  with ax2+bx+c we get
    a=4; b=-8k and c=-9.

    Since one root is the negative of the other, let us assume that the roots are p an -p.
    Sum of the roots, a+(-a)=-b/a= - (-8k) / 4
    0=2k
    k=0

    2Thank You

    Bindal Ayush 4 years, 8 months ago

    Hey how r i

    0Thank You

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