I forgot how to do these and I don't remember where to begin
Help?
(x-5)/(x^2-4x-5)
The Purplemath Forums
Helping students gain understanding and self-confidence in algebra.
simplifiying expressions? 
2 posts
• Page 1 of 1
simplifiying expressions?
by EpidemicBeatz on Thu Aug 09, 2012 8:33 pm
- EpidemicBeatz
- Posts: 1
- Joined: Thu Aug 09, 2012 8:26 pm
Re: simplifiying expressions? 
by little_dragon on Thu Aug 09, 2012 8:48 pm
EpidemicBeatz wrote:I forgot how to do these and I don't remember where to begin
Help?
(x-5)/(x^2-4x-5)
they show how here: http://www.purplemath.com/modules/rtnldefs2.htm
start by factoring: http://www.purplemath.com/modules/factquad.htm
x^2-4x-5=(x-5)(x+1)
cancel common factors
dont forget x-5=1(x-5)
-
little_dragon - Posts: 185
- Joined: Mon Dec 08, 2008 5:18 pm
2 posts
• Page 1 of 1