2=1, is this valid?

This is a discussion on 2=1, is this valid? within the A Brief History of Cprogramming.com forums, part of the Community Boards category; a=b a^2 = ab a^2-b^2 = ab-b^2 (a+b)(a-b) = b(a-b) (a+b)=b (a+a)=a 2a = a 2 = 1 valid?...

  1. #1
    i want wookie cookies the Wookie's Avatar
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    2=1, is this valid?

    a=b
    a^2 = ab
    a^2-b^2 = ab-b^2
    (a+b)(a-b) = b(a-b)
    (a+b)=b
    (a+a)=a
    2a = a
    2 = 1

    valid?

  2. #2
    Cheesy Poofs! PJYelton's Avatar
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    No, because a-b equals zero, therefore you are dividing by zero which is a no-no. Its like saying zero times three equals zero times four, cancel the zeroes and you get three equals four.

  3. #3
    carry on JaWiB's Avatar
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    Where did you get 2=1? As far as I can tell, a and b both equal 0
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  4. #4
    i want wookie cookies the Wookie's Avatar
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    well if you said a=b=2

    PJ: i see it now. cant divide by zero

  5. #5
    Senior Member joshdick's Avatar
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    This thread gets two thumbs down.
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