if 5 is zero of quadriatic polynomial xsquare – kx – 15 then find the value of k

Question

if 5 is zero of quadriatic polynomial xsquare – kx – 15 then find the value of k

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Raelynn 6 days 2021-11-26T03:09:13+00:00 1 Answer 0 views 0

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    2021-11-26T03:11:02+00:00

    Answer:

    x=5

    putting x in equation

    p(x)=x^2-kx-15=0

    =(5)^2-k(5)-15=0

    =25-5k-15=0

    =10-5k=0

    =-5k=-10

    =k=-10/-5

    =k=2

    Value of k is 2

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