if [x-2] is a factor of 5x^2-kx-18then the value of k is?

Question

if [x-2] is a factor of 5x^2-kx-18then the value of k is?

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Natalia 1 month 2021-08-17T10:32:37+00:00 1 Answer 0 views 0

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    0
    2021-08-17T10:34:32+00:00

    Answer:

    4

    Step-by-step explanation:

    let g (x) = 0

    x-2 = 0

    x=2

    now,

    if x=2 is factor of above equation

    f (2) = 5 x 2 – k x2 – 18

    0 = 10 – 18 – k x 2  

    -8 /2 = -k

    -4 = -k

    k = 4

    hope this will helps you

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