Solved

Solving Quadratic Equations by Factoring

Posted on 2011-03-17
4
294 Views
Last Modified: 2012-06-21
Example: Solve x^2=4 for x.

x^2=4
x^2-4=0
(x+2)(x-2)=0
x+2=0      or     x-2=0
    x=-2     or        x=2


How to solve this? Thanks.

9m=m^2
0
Comment
Question by:kadin
  • 2
  • 2
4 Comments
 
LVL 32

Accepted Solution

by:
phoffric earned 500 total points
Comment Utility
9m=m^2   -->  m^2 - 9m = 0
Then factor out the m: m( m-9 ) =0

m = 0       or     m - 9 = 0
m = 0       or     m = 9
0
 

Author Comment

by:kadin
Comment Utility
Thanks. One more question. How do I plug the numbers into the original equation to verify both answers work?
0
 

Author Comment

by:kadin
Comment Utility
Never mind. I think I got it. Thanks.
0
 
LVL 32

Expert Comment

by:phoffric
Comment Utility
Good point about checking your work. I forgot to mention it.
0

Featured Post

IT, Stop Being Called Into Every Meeting

Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!

Join & Write a Comment

Suggested Solutions

Have you ever thought of installing a power system that generates solar electricity to power your house? Some may say yes, while others may tell me no. But have you noticed that people around you are now considering installing such systems in their …
Article by: Nicole
This is a research brief on the potential colonization of humans on Mars.
Polish reports in Access so they look terrific. Take yourself to another level. Equations, Back Color, Alternate Back Color. Write easy VBA Code. Tighten space to use less pages. Launch report from a menu, considering criteria only when it is filled…
This video shows how to remove a single email address from the Outlook 2010 Auto Suggestion memory. NOTE: For Outlook 2016 and 2013 perform the exact same steps. Open a new email: Click the New email button in Outlook. Start typing the address: …

728 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now