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# Proof for this? watch

1. 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.

2. Compare (n-1)(n+1) with n^2.

(He did prove it on the show...)
3. (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
4. What was the show?
5. Id like to know too, sounds interesting.
6. "The show" was probably that Marcus du Sautoy thing on BBC 4.
7. (Original post by BJack)
"The show" was probably that Marcus du Sautoy thing on BBC 4.
It was ;]

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

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