SOLUTION: Form a third degree polynomial function with real coefficients-5+I and -4 are zeros

Algebra ->  College  -> Linear Algebra -> SOLUTION: Form a third degree polynomial function with real coefficients-5+I and -4 are zeros      Log On


   

Question 1074062: Form a third degree polynomial function with real coefficients-5+I and -4 are zeros
Answer by josgarithmetic(39625) About Me  (Show Source):
You can put this solution on YOUR website!
Best to use lower-case i instead of I, for the imaginary unit.

The other root is 5-i.

%28x-%285%2Bi%29%29%28x-%285-i%29%29%28x%2B4%29
Do the steps...
%28x%5E2-10x%2B26%29%28x%2B4%29
highlight%28x%5E3-6x%5E2-14x%2B52%29