Two Equals One Proof


See if you can follow this--


Suppose we let: 




Then-- Multiplying both sides by A, we get: 




Subtracting B2 from both sides, we get: 

A2 - B2


 AB - B2 

Factoring, we get: 

(A - B)(A + B)


 (A - B)B 

Dividing both sides by (A - B), we get: 

(A + B)



And since A = B, we can substitute B for A: 

(B + B)



Dividing both sides by B, we get: 




And then: 




Q. E. D. Smiley Face


Can you find the flaw in the above "proof"? If so, you now know why we have one very important constraint built into our math system.

If you can't find the flaw, well . . . I could let you suffer . . . but then again, I hate seeing someone suffer so. So if you're one of the sufferers, send me an e-mail or Comment on this Page and I'll explain the flaw to you.

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Last Updated:

Sunday, January 20, 2008