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    I know this is simple, but I'd just like to see a proof.

    If you take the square of any number, then the integers at either side will multiply to make the square of the number -1.

    eg.

    5^2 = 25



4 x 6 = 24
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    Wiki Support Team
    Compare (n-1)(n+1) with n^2.

    (He did prove it on the show...)
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    (Original post by generalebriety)
    Compare (n-1)(n+1) with n^2.

    (He did prove it on the show...)
    I must have paused it too early xD
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    What was the show?
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    Id like to know too, sounds interesting.
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    "The show" was probably that Marcus du Sautoy thing on BBC 4.
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    (Original post by BJack)
    "The show" was probably that Marcus du Sautoy thing on BBC 4.
    It was ;]

    the story of maths, I think
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    What? You mean that series comes on every year now, does it?
 
 
 
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