Answer:
Since 4 - 2i is a zero, 4 + 2i is also a zero.
Explanation:
x = 2, x = 4 - 2i, x = 4 + 2i
x - 2 = 0, x - 4 + 2i = 0, x - 4 - 2i = 0
P(x) = (x - 2)(x - 4 + 2i)(x - 4 - 2i)
P(x) = (x - 2)(x2 - 8x + 20)
P(x) = x3- 10x2 + 36x - 40
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