
Elementary Math Fractions, Percentages, Word Problems, Equations, Inequations, Factorization, Expansion 
 LinkBack  Thread Tools  Display Modes 
February 26th, 2012, 07:49 AM  #1 
Newbie Joined: Feb 2012 Posts: 9 Thanks: 0  Solve a problem please!!! Quiz Monday
(27x + 297)(15x (105))=0 I know it equals 0 But I have to show the work. There are two variables. CONFUSED??? 
February 26th, 2012, 09:01 AM  #2 
Newbie Joined: Feb 2012 From: Russia Posts: 12 Thanks: 0  Re: Solve a problem please!!! Quiz Monday You have the product of two factors: It's clear that if the product of two factors is 0, at least one of the factors must be 0. So we have: The first factor: The second factor: Answer: x = 11 OR x = 7. This equation has 2 roots. 
February 26th, 2012, 02:26 PM  #3 
Newbie Joined: Feb 2012 Posts: 9 Thanks: 0  Re: Solve a problem please!!! Quiz Monday
If the equation is simplified to equal x = 11 or x = 7 How does one of these equal 0 
February 26th, 2012, 04:18 PM  #4 
Senior Member Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,205 Thanks: 512 Math Focus: Calculus/ODEs  Re: Solve a problem please!!! Quiz Monday
We are given: Factor further: Divide through by 27·15: Now, by the zeroproduct property, if two factors are equal to zero, then the equation is true if either of the factors is equal to zero. So, what you do is take each factor in turn, equate to zero and solve for x: i) ii) These are the two values for x which are solutions to the original equation. 

Tags 
monday, problem, quiz, solve 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
A probability quiz  Viajero  Probability and Statistics  2  May 14th, 2013 06:45 AM 
Quiz problem that I got killed on  aaronmath  Calculus  16  November 19th, 2011 07:03 AM 
Good Quiz !  Ould Youbba  Algebra  6  August 31st, 2011 01:06 AM 
Math quiz  waqasma  New Users  1  March 29th, 2011 11:46 AM 
Scoring a Quiz  cesarcesar2  Algebra  1  July 7th, 2008 06:06 AM 