SOLUTION: solve the equation x3 + 2x2 + x + 2 = 0 if -2 is a root?

Question 218673: solve the equation x3 + 2x2 + x + 2 = 0 if -2 is a root?
Answer by drj(1380) (Show Source): You can put this solution on YOUR website!
Solve the equation x3 + 2x2 + x + 2 = 0 if -2 is a root?

Step 1. If -2 is a root we can factor it out (x+2) as

Step 2. Then which is or where

Step 3. ANSWER: The roots are -2, i, and -i.

I hope the above steps and explanation were helpful.

For Step-By-Step videos on Introduction to Algebra, please visit http://www.FreedomUniversity.TV/courses/IntroAlgebra and for Trigonometry please visit http://www.FreedomUniversity.TV/courses/Trigonometry.

Also, good luck in your studies and contact me at john@e-liteworks.com for your future math needs.

Respectfully,
Dr J

http://www.FreedomUniversity.TV

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