
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
September 29th, 2012, 05:54 PM  #1 
Newbie Joined: Sep 2012 Posts: 4 Thanks: 0  Help with Algebra Question
Have a problems with question Make x the subject: y=2?(3x^21 ) I've tried lots of different ways but I can't quite get the answer. I think I have to get rid of the ? first. That's what I'm not sure about. Anyway the answer is: x=?((y^2+ 4)/12 ) 
September 29th, 2012, 06:23 PM  #2 
Global Moderator Joined: Oct 2008 From: London, Ontario, Canada  The Forest City Posts: 7,947 Thanks: 1139 Math Focus: Elementary mathematics and beyond  Re: Help with Algebra Question The above accounts for the possibility of negative x. 
September 29th, 2012, 06:31 PM  #3  
Math Team Joined: Dec 2006 From: Lexington, MA Posts: 3,267 Thanks: 408  Re: Help with Algebra Question Hello, walker8476! Quote:
Take it one step at a time. Look at what was being done to the x. (1) x is squared. (2) Then multiplied by 3. (3) Then 1 is subtracted. (4) Then the square root is taken. (5) Then the result is multiplied by 2. Now, we read up the list, using the inverse operations.  
September 30th, 2012, 03:09 PM  #4 
Newbie Joined: Sep 2012 Posts: 4 Thanks: 0  Re: Help with Algebra Question
Thank you both. I understand now. I like the approach of writing out the steps then going up the list. I never knew about this approach. Everything is simple when you break it down! 

Tags 
algebra, question 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Algebra Question  Raiiderx  Algebra  3  October 30th, 2013 12:16 AM 
Algebra Question  hatchelhoff  Algebra  3  February 15th, 2012 06:33 AM 
Algebra Question  hatchelhoff  Algebra  3  February 11th, 2012 05:28 AM 
series question  might be an algebra question  aaronmath  Calculus  2  December 17th, 2011 08:28 PM 
Algebra question  Coman  Algebra  2  October 8th, 2008 03:50 AM 