SOLUTION: if a cubic polynomial has roots -5 and 6-2i, what is its third root?
I can not figure this out
Algebra.Com
Question 636349: if a cubic polynomial has roots -5 and 6-2i, what is its third root?
I can not figure this out
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Complex zeros of polynomial functions with real coefficients ALWAYS appear in conjugate pairs. So if 
is a zero of a polynomial function with real coefficients, then the conjugate, 
, is also a zero.
John
My calculator said it, I believe it, that settles it
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