
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
October 9th, 2007, 05:03 PM  #1 
Newbie Joined: Oct 2007 Posts: 3 Thanks: 0  converting quadratic expression to a different expression
I am trying to figure out how to convert the equation: q / (p ± sqrt(p^2 + q)) to p ± sqrt(p^2 + q) I was told by a classmate that to do this I have to multiply the top and the bottom by p + sqrt(p^2 + q). The minus/plus is the key. I don't know how to use the minus/plus method to cancel out the plus/minus. Could someone help me out on this? Even show me a simple example of the process. Thanks for any help I can get. 
October 10th, 2007, 03:56 PM  #2 
Global Moderator Joined: May 2007 Posts: 6,510 Thanks: 584 
To get the hang of it, do the + and  seperately. This means multiply the term with plus by a term with  and then the other way around. You should see right away what's going on.

October 10th, 2007, 04:53 PM  #3 
Newbie Joined: Oct 2007 Posts: 3 Thanks: 0 
Thanks mathman, That did the trick 

Tags 
converting, expression, quadratic 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Need help converting an expression!!!  mada2009  Algebra  3  January 31st, 2012 01:51 PM 
Quadratic Expression  bilano99  Algebra  2  October 20th, 2011 08:13 AM 
Rewrite the expression as an algebraic expression in x  kev085  Algebra  1  April 24th, 2009 04:06 AM 
Converting Sentence to Boolean Expression...  inthedl  Applied Math  2  October 17th, 2008 05:15 AM 
converting into quadratic form  zelend  Calculus  0  December 31st, 1969 04:00 PM 