If a + bi is a root of a polynomial, then _______ is also a root.
Options
A
i2
B
a - bi
C
bi
D
-i2
Answer & Analysis
Answer
B
Analysis
The answer to this question is B,
"bi," because if a+bi is a root of a polynomial with real
coefficients, then its conjugate, a-bi, will also be a root. The other options,
i
Click "Show Answer" to reveal the answer and analysis
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