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December 21, 2014

December 21, 2014

Posted by **John** on Thursday, January 10, 2013 at 11:08pm.

- Math -
**Reiny**, Thursday, January 10, 2013 at 11:12pm= (x-1)(x+2) [ (x+2) - (x-1) ]

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

= 3(x-1)(x+2)

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