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

Last Updated: 19.06.2025 03:41

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

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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 wives cheat on their loyal husbands?

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

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n^2 - 1

What causes you to be tired all the time and major headaches?

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What made you feel satisfied about your life today?

(n - 1)(n + 1)

Move the nub up to the top:

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

Since the rise of feminism, the dating market has shifted to the disadvantage of men and that is causing this incel phenomenon. Why do women not understand how lonely the majority of men are?

n^2 - n + n - 1

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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Why is it difficult to get a job?

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