
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
September 11th, 2008, 05:55 AM  #1 
Newbie Joined: Sep 2008 Posts: 1 Thanks: 0  Solve Quadratic Equation for x
Hi I am trying to solve the following equation for x: 8.64 = 0.0033x2 + 0.2496x + 4.2041 I'm not exactly sure how to proceed with this. Would I first subtract 8.64 from both sides so that one side can be set to 0? Thanks Peter 
September 11th, 2008, 12:46 PM  #2  
Global Moderator Joined: May 2007 Posts: 6,614 Thanks: 617  Re: Solve Quadratic Equation for x Quote:
 
September 11th, 2008, 02:23 PM  #3 
Senior Member Joined: Jul 2008 Posts: 895 Thanks: 0  Re: Solve Quadratic Equation for x
Actually, there are several steps possible, each of which could be "first". If so unsure, you might want to first brush up on some simpler examples from your text. If it is allowed, I can upload a small spreadsheet I did a long time back for generating practice problems [ and answers.] It's completely free to use/change as you wish. I did a number of them on different topics just for fun. The platform can be Excel or OpenOffice. My own instinct would be to first multiply to get rid of decimals. My second impulse would be to rearrange to have x^2 coefficient positive. That's not critical, just force of habit just as we use rectangular coordinates at times when we really don't have to. 
September 11th, 2008, 10:15 PM  #4  
Global Moderator Joined: Dec 2006 Posts: 19,732 Thanks: 1810  Quote:
 

Tags 
equation, quadratic, solve 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Solve for coefficients in quadratic equation  mms  Algebra  23  February 14th, 2014 03:41 AM 
solve quadratic equation  rayman  Complex Analysis  6  October 27th, 2013 01:32 PM 
Solve quadratic equation knowing y  alexmulo  Algebra  8  August 23rd, 2012 06:45 AM 
solve a quadratic equation  hannah2329  Algebra  1  September 19th, 2011 12:54 PM 
Programming TI83 calculator to Solve Quadratic Equation?  confused20  Algebra  10  March 18th, 2008 05:21 PM 