What is the degree of a polynomial that has roots of , , and ?
Options
A
4
B
3
C
5
D
1
Answer & Analysis
Answer
C
Analysis
According to the Conjugate Root Theorem, if a polynomial has real coefficients and a complex number is a root, then its complex conjugate is also a root.
Here one of the roots is . So its conjugate is also a root.
The given roots are
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