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

Last Updated: 18.06.2025 03:01

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

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Move the nub up to the top:

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What's an underrated/unknown novel or series that you think deserves more attention?

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.

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Is it wise to choose your family over your honor?

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

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

What is your craziest/worst Halloween story?

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(n - 1)(n + 1)

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Musk's Daring Gambit Has Managed to Do Something Remarkable: Alienate Democrats AND Republicans - futurism.com

n^2 - n + n - 1

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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What are the possible reasons for people feeling depressed after the holiday season? Why does being alone exacerbate these feelings?

n^2 - 1