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27 March, 07:13

If (x-7) is a factor of 2x^2-11x+k, what is the value of k

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  1. 27 March, 08:44
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    If x-7 = 0

    Then x = 7

    Substitute x=7 into f (x):

    2 (7) ^2 - 11 (7) + k

    = (98-77) + k

    = 21+k

    Therefore k=-21 because 21 + (-21) = 0
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