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

Last Updated: 18.06.2025 10:26

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

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Move the nub up to the top:

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

How do flat Earthers explain the existence of other spherical planets?

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n^2 - 1

What was the first Native American tribe to inhabit Long Island, NY?

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

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I am married for 3 years. My husband keeps pressing my boobs 40-50 times a day. He never stops though I ask him not to. What I should do to stop it?

n^2 - n + n - 1

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

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How do you deal with neighbors who are always telling you what to do?

(n - 1)(n + 1)

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

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

We white women don't like white men. Do you have any issue with that?

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