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

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Question 836698: x^3+9x^2-x-9=0
Answer by doodles(24) About Me  (Show Source):
You can put this solution on YOUR website!
The way one solves this type of equation is through the grouping method:
so...
x%5E3%2B9x%5E2-x-9 then we group the 1st and 2nd terms together and factor
x%5E3%2B9x%5E2 --> x%5E2%28x%2B9%29
then it is the same idea with the 3rd and 4th terms:
x%2B9
Except this time we have nothing to factor out...
The next step is to cancel out like terms in this case it is x%2B9
so we are left with x%5E2
This x%5E2 is one of your two terms. The other one is x%2B9. Yup that common term is the other factor!
So our factors are %28x%5E2%29%28x%2B9%29}
However, we are not done since x%5E2 can be factored even more:
So ultimately our final answer is:
%28x%29%28x%29%28x%2B9%29