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

Last Updated: 17.06.2025 03:27

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

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(n - 1)(n + 1)

n^2 - n + n - 1

I found out I have cancer—I have not told my family. We can’t afford the treatment anyway. Should I just say nothing and let nature take its course?

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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

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Do people of NYC drive around Central Park all the time? Is there any subway tunnel to cross the park quickly? Is it annoying for people and does it cause traffic?

n^2 - 1

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What kind of pleasure do gay men get from being bottom? The idea is very appealing to me but in practice it's quite painful.

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Move the nub up to the top:

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

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

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

How does an experienced gay/bi guy handle a bi-courius guy on his first time?

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