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

12.06.2025 04:33

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

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n^2 - n + n - 1

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

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(n - 1)(n + 1)

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Why do people who aren't trans feel the need to put pronouns next to their name or picture? It seems so cringeworthy to me, to participate in that SJW paradigm of thought, like they are a spineless person who just goes along with the trends.

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Move the nub up to the top:

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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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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Can the belief of not worshipping Christ held by Jehovah's Witnesses be disproven using scripture alone?

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

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

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n^2 - 1