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

Last Updated: 19.06.2025 04:34

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

The more direct answer is to look at a rectangle with sides of n + 1 and n - 1, let’s go with n = 2

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

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What traits are considered unattractive? Which traits are typically seen as attractive and why?

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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

How much stronger is an average man than an average woman?

(n - 1)(n + 1)

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Move the nub up to the top:

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.

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

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n^2 - n + n - 1

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

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