Teacher2Teacher 
Q&A #3398 
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From: Loyd To: Teacher2Teacher Public Discussion Date: 2004050713:26:07 Subject: Re: Re: Re: HELP;removing common factor! Sarah, that is a nice proof. At first I was confused but finally saw the light. On your third step you factored out the common factor. On my proof, I noticed that a!/(a1!) = a. That may not be obvious to some, but here is an example. Let a=7, then a!=1x2x3x4x5x6x7 Then (a1)!= 1x2x3x4x5x6 So that 1x2x3x4x5x6x7  = 7 1x2x3x4x5x6
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