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

Last Updated: 17.06.2025 15:16

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

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Why do people hate fat people so much, even people who aren't exactly supermodels themselves? It seems like such a deep, passionate hatred, like they're offended by fat people just existing. Fat people didn't do anything to them, so why hate them?

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(n - 1)(n + 1)

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I'm British and I hate my glasses. Are prescription glasses better in New York City?

n^2 - 1

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

n^2 - n + n - 1

How can we worship Shri Krishna at home? Is it enough to install an idol, or are there other rituals that are mandatory?

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

Move the nub up to the top:

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

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

What are the extra benefits of a smart TV?

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