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(x+1)(x-1)(x+2)=
i dont understand
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Asked 12/1/2008 10:13:28 AM
Updated 8/24/2014 1:07:10 PM
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(x + 1)(x - 1)(x + 2)

= (x^2 - x + x - 1) (x + 2)

= (x^2 - 1) (x + 2)

= x^3 + 2x^2 - x - 2
Added 8/24/2014 1:07:10 PM
This answer has been confirmed as correct and helpful.
Confirmed by yumdrea [8/24/2014 1:22:18 PM]
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