Question

if (x-2)is a factor of x^3+6x^3+4x+k find the value of k​

Answer 1

Let x - 2 = 0

x = 2

$( {2})^{3} + 6 ({2})^{2} + 4(2) + k = 0 \\ 8 + 24 + 8 + k = 0 \\ 40 + k = 0 \\ k = - 40$

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