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

12.06.2025 02:22

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

n^2 - n + n - 1

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

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Oxford study finds 'extraordinary' tremors caused by tsunamis - BBC

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

Move the nub up to the top:

How do so-called Religious/Christian people really think homosexuality is even a sin? That would be nonsense. In fact, LGBT people need love instead of contempt/hatred. The word Homosexual didn't appear until the 1850s.

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(n - 1)(n + 1)

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Samsung is giving these Galaxy phones a big One UI upgrade - here's which models qualify - ZDNET

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

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

What is the impact of being stereotyped as poor on an individual's life? How does it make them feel?

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

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n^2 - 1

Are Americans really as uneducated and ignorant as portrayed in the media?

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