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

13.06.2025 16:00

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

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

Isn't it a turn on to have sex with a girl in a skirt or in a tight spandex?

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n^2 - n + n - 1

(n - 1)(n + 1)

How do you feel about Donald Trump signing an executive order that says there are only two genders?

Move the nub up to the top:

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Why do so many autistic adults deal with self-hatred?

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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

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

How does it feel to have sex with a 40 year old curvy aunty?

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

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n^2 - 1

Why didn't my ex fight for our relationship? He gave up so easily.

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