Teacher2Teacher |
Q&A #1530 |
From: Teresa
To: Teacher2Teacher Public Discussion
Date: 2003040911:16:57
Subject: Re: x squared minus one divided by one minus x
x^2-1/1-x Factor the top to (x+1)(x-1), a difference of squares. Next multiply the bottom by -1 to change the signs. Now we have (x+1)(x-1)/-1(x-1). cancel the (x-1)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.
Post a reply to this message
Post a related public
discussion message
Ask Teacher2Teacher a new question
[Privacy Policy] [Terms of Use]
Math Forum Home ||
The Math Library ||
Quick Reference ||
Math Forum Search