SOLUTION: how do you solve the following question? 2u^5-7u^3-4u

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Question 565155: how do you solve the following question?
2u^5-7u^3-4u

Answer by mananth(16946)   (Show Source): You can put this solution on YOUR website!
2u^5-7u^3-4u
u(2u^4-7u^2-4)
u(2u^4-8u^2+u^2-4)
u(2u^2(u^2-4)+1(u^2-4))
u[(u^2-4)(2u^2+1)]
u[(u+2)(u-2)(2u^2+1)]

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