SOLUTION: solve the equation x^3+2x^2+x+2=0, if -2 is a root.

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Question 49183: solve the equation x^3+2x^2+x+2=0, if -2 is a root.
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
-2|.....1.....2.....1.....2
..........1......0......1......0
(x + 2)(x^2 + 1)
-2 and i and -i
graph%28600%2C600%2C-10%2C10%2C-10%2C10%2Cx%5E3%2B2x%5E2%2Bx%2B2%2C0%29