SOLUTION: If x = 3i is a root of the polynomial P(x) which has real coefficients, then what other root is guaranteed

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Question 291911: If x = 3i is a root of the polynomial P(x) which has real coefficients, then what other root is guaranteed
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
any zeros (roots) that are either complex(with i) or square roots come in plus and minus pairs.
x=-3i is also a root.