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Find the value of k if …

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Find the value of k if 2 is the solution of polynomial x square minus 2 k x + 5

    • Posted by Devansh Khandelwal 7 years, 3 months ago

    CBSE > Class 10 > Mathematics
    • 4 answers

    Yogita Ingle 7 years, 3 months ago

    If  x = 2
    x2 - 2kx + 5 = 0
     (2)2 - 2k(2) + 5 = 0
    4 - 4k + 5 = 0
    -4k + 9 = 0
    4k = 9
    k = 9/4

    0Thank You

    Sarita Mishra 7 years, 3 months ago

    Put 2 as the value of x

    0Thank You

    Sandhya Sridhar 7 years, 3 months ago

    (2)^2- 2k (2) +5 ( substitution of x ) 4-4k+5=0 9-4k=0 -4k=-9 K= 9/4

    1Thank You

    Chētnà Pandey✌️ 7 years, 3 months ago

    -5/4

    0Thank You

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