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Why is (n-1)(n+1)=n^2-1?

12.06.2025 04:33

Why is (n-1)(n+1)=n^2-1?

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n^2 - n + n - 1

Why does Christianity push reconciliation after a partner cheats? Mine had a 7-year affair with someone half my age. He cheated and lied. He is not the same to me.

The more direct answer is to look at a rectangle with sides of n + 1 and n - 1, let’s go with n = 2

The basic answer is that you cross-multiply the values in each factor:

And you are left with almost a square. One less than the square of side n.

Why does a straight man like anal penetration?

So, that’s a rectangle with sides 2 and 4.

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What are the reasons behind Europeans preferring to visit third world countries over taking holidays in their own continent?

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n^2 - 1

If you cut off the end of that rectangle, you make it smaller, 2 * 3 and a separate nub of size 1 * 2

Why do some people have sex with dogs?

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Move the nub up to the top:

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A New Law of Nature Attempts to Explain the Complexity of the Universe - WIRED

(n - 1)(n + 1)