SOLUTION: Find a cubic equation whose roots are -4 and -6i.

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Find a cubic equation whose roots are -4 and -6i.      Log On


   



Question 324819: Find a cubic equation whose roots are -4 and -6i.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Find a cubic equation whose roots are -4 and -6i.
------------------
Complex roots are always conjugate pairs, so the 3rd root is +6i.
--> %28x%2B4%29%2A%28x%5E2%2B36%29+=+0
You can multiply it.