SOLUTION: x^3+9x^2-x-9=0

Question 836698: x^3+9x^2-x-9=0
Answer by doodles(24) (Show Source): You can put this solution on YOUR website!
The way one solves this type of equation is through the grouping method:
so...
then we group the 1st and 2nd terms together and factor
-->
then it is the same idea with the 3rd and 4th terms:

Except this time we have nothing to factor out...
The next step is to cancel out like terms in this case it is
so we are left with
This is one of your two terms. The other one is . Yup that common term is the other factor!
So our factors are }
However, we are not done since can be factored even more:
So ultimately our final answer is:

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