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

Last Updated: 02.07.2025 02:32

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

Move the nub up to the top:

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I committed the unpardonable sin. God immediately punished me so that I can no longer think like before and my brain is as if paralyzed and does not work. I've tried everything (confession, repentance, etc.) nothing helps. Any advice?

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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

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Why do some people feel down in summer, specifically in July and August? What could be the reasons behind this feeling of sadness during those months only?

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.

iFixit says the Switch 2 is even harder to repair than the original - The Verge

n^2 - n + n - 1

(n - 1)(n + 1)

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What is a good comeback for when someone calls you flat?

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n^2 - 1

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

These glowing axolotls may hold the secret to human limb regeneration - The Washington Post

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