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

Last Updated: 02.07.2025 07:02

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

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.

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

Aut ut accusantium quos sint ad aperiam.

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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What happened in a tent while you were camping that you will never forget?

n^2 - n + n - 1

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n^2 - 1

Who is Harold Lloyd?

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(n - 1)(n + 1)

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My boyfriend wants to break up over too many petty arguments. To me, they are molehills because I truly love him & don't really think twice about them. If he loved me would he work through it?

Move the nub up to the top:

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

This is a real question: Why do a lot of men/boys hate (yes, hate) women that voice their criteria in choosing a partner? Even when the criteria is sane and responsible. Besides it being, sadly, an effective mating strategy, why does it exist?

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