Teacher2Teacher 
Q&A #1530 
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From: Teresa <wordtntword@aol.com> To: Teacher2Teacher Public Discussion Date: 2003040911:16:57 Subject: Re: x squared minus one divided by one minus x x^21/1x Factor the top to (x+1)(x1), a difference of squares. Next multiply the bottom by 1 to change the signs. Now we have (x+1)(x1)/1(x1). cancel the (x1)s. Now we have x+1/1. Now flip and multiply. x+1 times 1. Because the 1 is on the bottom it is actually 1/1. When you flip this to multiply you have the correct answer. Hope this is helpful.
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