Information is given about a complex polynomial f(x) whose coefficients are real numbers. Find the remaining zeros for f.
Degree 3; zeros 1, 2 - i
Can someone explain how to do this?
Information is given about a complex polynomial f(x) whose coefficients are real numbers. Find the remaining zeros for f.
Degree 3; zeros 1, 2 - i
Can someone explain how to do this?
The other root is $\displaystyle 2+i$.
If a polynomial with real coefficients has a complex root $\displaystyle z$ then $\displaystyle \overline z $ is also a root.