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

13.06.2025 09:10

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

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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?

(n - 1)(n + 1)

Move the nub up to the top:

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

As a guy, how do you know you if you are considered attractive?

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

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:

It is common sense that Joe Biden is ruining America and is unfit to be president, but why are the liberals still supporting him when Trump is obviously a much better fit for office?

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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

n^2 - 1

Have you been arrested or investigated?

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n^2 - n + n - 1

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Why does my sister want to have sex with me? What should I do?

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