Having trouble with algebra ll

[Sherri]

Someone please help. I truly do not understand this..another one..

Information is given about a polynomial f(x) whose coefficients are real numbers. Find the remaining zeros of f.
Degree 3; zeros: 8, -6-i

 

[Steven G]

Someone please help. I truly do not understand this..another one..

Information is given about a polynomial f(x) whose coefficients are real numbers. Find the remaining zeros of f.
Degree 3; zeros: 8, -6-i

There are three zeros and you are given 2, so there is one more.
Hint: complex roots appear in pairs. These pairs are called complex conjugates. If the coefficient of the polynomial are real numbers and one complex root is a+bi then the other root is a-bi. If one complex root is a-bi, then the other is a+bi.

This hint should help.