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26 March, 22:32

If (x + 2) is a factor of x3 - 6x2 + kx + 10, k =

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  1. 26 March, 22:49
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    Hello:

    let : f (x) = x3 - 6x2 + kx + 10

    If (x + 2) is a factor of x3 - 6x2 + kx + 10 : f (-2) = 0

    (-2) ^3-6 (-2) ² + k (-2) + 10=0

    -8 - 24-2k + 10 = 0

    -2k = 8+24-10

    -2k = 22

    k = - 11
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