if 5 is a factor of zero of x3-4x२+kx-8 find k
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p(x) = x3 - 4x2 + kx - 8
p(5) = (5)^3 - 4(5)^2 + k(5) - 8
0 = 125 - 100 + 5k - 8
0 = 25 - 8 + 5k
- 17 /5 = k
Therefore, k = -17/5
Hope it helped u.... ^_^
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