Jump to content
BrainDen.com - Brain Teasers
  • 0
Sign in to follow this  
Guest

2=1 How can this be true? read to find out

Question

Guest

a=b

a2=ab

a2-b2=ab-b2

9a+b)(a-b)=b(a-b)

(a+b)=b

a+a=a

2a=a

2=1

To be honest I didn't really come up with this i found it on another bwesite but it is awesome right? Take that math teachers!

Share this post


Link to post
Share on other sites

11 answers to this question

Recommended Posts

  • 0

Reposting it to make it a little bit easier to understand:

a=b

a2=ab

a2-b2=ab-b2

(a+b)(a-b)=b(a-b)

a+b=b

a+a=a

2a=a

2=1

I have found the flaw, but I remember when I posted that 1+1=0 and someone ticked me off by posting the flaw. It made me so sad that someone would go and ruin the fun. :( So I'm not gonna post it! :D

Share this post


Link to post
Share on other sites
  • 0
Guest

I, however, have no problem posting the flaw:

<p>if a=b, then a-b=0</p><p>From line 4 to line 5 you divide by (a-b), which is dividing by zero. This is not allowed.</p>

Share this post


Link to post
Share on other sites
  • 0
Guest

a=b

a2=ab

a2-b2=ab-b2

9a+b)(a-b)=b(a-b)

(a+b)=b

a+a=a

2a=a

2=1

To be honest I didn't really come up with this i found it on another bwesite but it is awesome right? Take that math teachers!

If your math teacher takes more than 30 seconds to see the error, get another math teacher!

Share this post


Link to post
Share on other sites
  • 0

This reminds me a bit of when we did systems of equations/inequalities in math class and we got nonsense like 7=5 or 0>11 when there was no solution.

Share this post


Link to post
Share on other sites
  • 0

@Nan That's what he's saying. I reposted it right below with the correct exponents so it's easier to read. :)

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Answer this question...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
Sign in to follow this  

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...