 Algebra help needed - XP Math - Forums Sign Up FREE! | Sign In | Classroom Setup | Common Core Alignment  XP Math - Forums Algebra help needed 04-25-2009   #1
bhagyashree95 Join Date: Jul 2007
Posts: 8 Algebra help needed

I was trying to get the a variables on one side of the equation and the b variables on the other side of the equation but I couldn't. Can anyone else separate these two variables?

( P.S. The equation is in the attached document.)

Thanks for helping!!!   Attached Files The Golden ratio formula.doc (23.5 KB, 103 views)  04-26-2009   #2
MAS1   Join Date: Dec 2008
Posts: 249 Quote:
 Originally Posted by bhagyashree95 I was trying to get the a variables on one side of the equation and the b variables on the other side of the equation but I couldn't. Can anyone else separate these two variables? ( P.S. The equation is in the attached document.) Thanks for helping!!!   If you are trying to solve for phi then:

(a + b)/(a) = a/b = phi where a > b, and b not equal to 0

Since a/b = phi, cross multiply to get a = b*phi

Substitute b*phi for a giving;

(b*phi + b)/(b*phi) = (b*phi)/b

Cross multiply to get;

(b^2)*phi^2 = (b^2)*phi + b^2

(b^2)*phi^2 = (b^2)(phi + 1)

phi^2 = phi + 1
phi^2 - phi - 1 = 0

Solve for phi. phi = (1 + sqrt(5))/2 (Ignore the (1 - sqrt(5))/2 case).  05-18-2009   #3
cambernae Join Date: Sep 2008
Posts: 6 Quote:
 Originally Posted by bhagyashree95 I was trying to get the a variables on one side of the equation and the b variables on the other side of the equation but I couldn't. Can anyone else separate these two variables? ( P.S. The equation is in the attached document.) Thanks for helping!!!   i really dnt know but if u have someproblem just ask someone u know because i reallly dnt get this situation Thread Tools Show Printable Version Email this Page Display Modes Switch to Linear Mode Hybrid Mode Switch to Threaded Mode Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is Off Forum Rules
 Forum Jump User Control Panel Private Messages Subscriptions Who's Online Search Forums Forums Home Welcome     XP Math News     Off-Topic Discussion Mathematics     XP Math Games Worksheets     Homework Help     Problems Library     Math Challenges

All times are GMT -4. The time now is 04:51 AM.

 Contact Us - XP Math - Forums - Archive - Privacy Statement - Top XP Math