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

12.06.2025 13:27

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

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What is the gayest experience you have seen in prison?

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

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AI Finally Cracks Decades-Long Mars Mystery That Has Baffled Scientists - The Daily Galaxy

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

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.

I feel like my boyfriend doesn't love me. Why?

(n - 1)(n + 1)

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Is Florida now unsurvivable because it's an oven due to climate change? It's 11:48 am on May 30th and the heat index in SoFla is 100. I can see it going up to over 130 by July.

Move the nub up to the top:

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^2 - n + n - 1

Why do some people prefer watching movies than reading novels even if they are both based on the same source material (book)?

n^2 - 1