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

11.06.2025 04:41

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

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

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n^2 - 1

Why don't people like Nickelback?

If you cut off the end of that rectangle, you make it smaller, 2 * 3 and a separate nub of size 1 * 2

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

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I’m a man. Why do I always fantasize about men’s cock? I don’t want a relationship with the man, I just want to suck his cock.

n^2 - n + n - 1

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(n - 1)(n + 1)

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What's your review of the movie Poor Things?

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

Move the nub up to the top:

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What are your thoughts on the dating app "scam"?

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