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If 2 + 3i is a root of a real-coefficient polynomial, which is also a root?
A-2 - 3i
B2 - 3i
C-2 + 3i
D3 + 2i
Answer & Solution
Correct answer: B. 2 - 3i
For real coefficients the complex conjugate of a root is also a root, and the conjugate of 2 + 3i is 2 - 3i.
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