simplifiying expressions?  TOPIC_SOLVED

Simplificatation, evaluation, linear equations, linear graphs, linear inequalities, basic word problems, etc.

simplifiying expressions?

Postby EpidemicBeatz on Thu Aug 09, 2012 8:33 pm

I forgot how to do these and I don't remember where to begin
Help?
(x-5)/(x^2-4x-5)
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Re: simplifiying expressions?  TOPIC_SOLVED

Postby 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)
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