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

12.06.2025 00:01

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

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

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

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How do the police verify the authenticity of an online profile? What methods do they use to determine if a profile is real or fake?

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

n^2 - 1

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

Hi, I’m Jo. My best friend died 2 years ago today. My husband died 6 months later. So, I’m a depressed mess (we were married 28 years) and can’t shake it. Even my Brother is worried. Some days I don’t do anything, and avoid men cause I don’t want to date. Any suggestions? Thanks for reading.

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What are the different celebrity lists (A-list, B-list, C-list, D-list)? How does one become a part of these lists and move up or down in status?

Move the nub up to the top:

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

(n - 1)(n + 1)

What can melt your heart?

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