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

13.06.2025 12:21

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

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n^2 - 1

How do I become an intelligent man?

Move the nub up to the top:

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

Delta Force selection is originally based on SAS selection, so why is there no brutal jungle phase for Delta Force? It seems like it's based only on the Brecon Beacons section.

(n - 1)(n + 1)

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Why are people with borderline personality disorder so capable of ripping someone apart with their words?

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

n^2 - n + n - 1

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What will the legacy of Jimmy Carter be in light of his death today at 100?

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

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

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

Why does my narcissistic ex told me that he f*cked and sleep with other woman and then at the end says that it also happened because of me?

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