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

15.06.2025 15:15

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

(n - 1)(n + 1)

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Move the nub up to the top:

Why do I get stressed when I go to bed?

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n^2 - n + n - 1

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Canadians went out of their way to help Americans stranded in Canada after 9.11.2001. Why did Canadians help so much the way they did? We read that Canadians don't particularly like Americans to begin with.

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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Are today’s baseball pitchers faster than a few years ago, or is it that radar guns have improved and get the pitch speed as it is released rather than as it reaches the plate?

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.

n^2 - 1

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?

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

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How do I build muscle easily with isometrics?

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