1. Can 1 equal 2?

Follow the logic. Can it be true?

puzzle2.jpg

2. "Cancelling" the two terms (one on the left and one on the right side of the equation) is the cause of the problem (false proof) because you're actually dividing by that term (a^2 - ab). And, that term = 0 because of the original statement that a=b, and division by 0 is undefined.

3. These noughty 'proofs' all fail for the same reason...

4. you actually end up with

a^2 - ab = 0

and if a=b

let's show numbers here

2^2-2(2) = 0

yes, yes it does.

has absolutely nothing to do with 1 = 2

it isn't 'canceling', it is 'factoring'

and you end up with a chunk of equation to solve. solve the chunk left.

5. Originally Posted by Maudibe
Follow the logic. Can it be true?

puzzle2.jpg
This is called "Left" handed logic.

6. Don't know how old this is, but my 9th grade algebra teacher gave this to us in 1955.

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