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

11.06.2025 00:12

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

n^2 - 1

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Move the nub up to the top:

Why do I have the impression that almost all questions about advertising the flat Earth theory come from people who don't believe in a flat Earth themselves and are just provoking?

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

Yuen: When cancer struck a second time, she found ‘euphoria’ - Star Tribune

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

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 are your political and economic beliefs? How did you form them, especially in comparison to those who hold opposing views?

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

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Housing market tide is turning as home prices fall in top cities - Fortune

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(n - 1)(n + 1)

n^2 - n + n - 1

How does someone start doing urban exploration?

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