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Thread: Can 1 equal 2?

  1. #1
    Silver Lounger Maudibe's Avatar
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    Can 1 equal 2?

    Follow the logic. Can it be true?

    puzzle2.jpg

  2. #2
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    "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. #3
    Super Moderator BATcher's Avatar
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    These noughty 'proofs' all fail for the same reason...
    BATcher

    Time prevents everything happening all at once...

  4. #4
    2 Star Lounger
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    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. #5
    5 Star Lounger RussB's Avatar
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    Quote Originally Posted by Maudibe View Post
    Follow the logic. Can it be true?

    puzzle2.jpg
    This is called "Left" handed logic.
    Do you "Believe"? Do you vote? Please Read:
    LEARN something today so you can TEACH something tomorrow.
    DETAIL in your question promotes DETAIL in my answer.
    Dominus Vobiscum <))>(

  6. #6
    Star Lounger lesle's Avatar
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    Don't know how old this is, but my 9th grade algebra teacher gave this to us in 1955.
    Last edited by lesle; 2013-05-15 at 05:29.

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