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

12.06.2025 00:15

Why is (n-1)(n+1)=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

n^2 - n + n - 1

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(n - 1)(n + 1)

Move the nub up to the top:

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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

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

What do you think of Vance using a clip of an embarrassed teenager from almost 20 years ago in an attempt to bully Kamala Harris?

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

n^2 - 1

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Why is there a "double standard" applied to sex between a dog and a human? Why is it that to many who are at least mildly okay with bestiality, a WOMAN having sex with a male dog is fine, but a guy with a female dog is not?

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