SOLUTION: Please help me factor: -{{{x^5 + 6x^3 - 9x}}}

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Question 1047608: Please help me factor:
-x%5E5+%2B+6x%5E3+-+9x
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
-x^5+6x^3-9x
factor out a -x
-x(x^4-6x^2+9); treat as a quadratic (x^2-6x+9)
-x(x^2-3)^2