Jump to content


Welcome to BrainDen.com - Brain Teasers Forum

Welcome to BrainDen.com - Brain Teasers Forum. Like most online communities you must register to post in our community, but don't worry this is a simple free process. To be a part of BrainDen Forums you may create a new account or sign in if you already have an account.
As a member you could start new topics, reply to others, subscribe to topics/forums to get automatic updates, get your own profile and make new friends.

Of course, you can also enjoy our collection of amazing optical illusions and cool math games.

If you like our site, you may support us by simply clicking Google "+1" or Facebook "Like" buttons at the top.
If you have a website, we would appreciate a little link to BrainDen.

Thanks and enjoy the Den :-)
Guest Message by DevFuse
 

Photo
- - - - -

Simple variable puzzle


  • Please log in to reply
1 reply to this topic

#1 Kikacat123

Kikacat123

    Senior Member

  • Members
  • PipPipPipPip
  • 505 posts
  • Gender:Female
  • Location:In a chair, held captive by the cat on my lap

Posted 05 February 2014 - 03:47 PM

2x squared = 4x squared. X = all real numbers. How is this possible?
  • 0
"Silflay hraka, u embleer Rah!" - Thlayli, Watership Down

#2 Perhaps check it again

Perhaps check it again

    Junior Member

  • Members
  • PipPip
  • 52 posts
  • Gender:Male

Posted 06 February 2014 - 03:14 AM

Options

 

1) You can't have ambiguity. You can't have "2x squared" meaning (2x) squared = 4x2 and have

"4x squared"  meaning 4x2  also.

 

2) "x" and "X" are different cases of the same letter, and therefore they represent different variables.

 

So, it would be consistent for those two equations to exist, because you have two different

variables in them.


  • 0




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users