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

12.06.2025 05:19

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

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

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Why should the US public listen to Lauren Boebert, the queen of hypocrisy tell us, "We need morals back in our nation" when her real-time video is the heartbeat of immoral? Why does her audio not match her video?

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

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The comments from Jamie Dimon last week are worth repeating - Forexlive

n^2 - n + n - 1

Move the nub up to the top:

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If people in the UK hate Trump so much, why does he own golf courses there?

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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

n^2 - 1

This is a real question: Why do a lot of men/boys hate (yes, hate) women that voice their criteria in choosing a partner? Even when the criteria is sane and responsible. Besides it being, sadly, an effective mating strategy, why does it exist?

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

(n - 1)(n + 1)

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