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

11.06.2025 12:26

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

(n - 1)(n + 1)

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What is truer than that which is true?

n^2 - n + n - 1

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

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

What causes tension between liberals and conservatives? Is it purely based on ideological differences or are there other factors at play?

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.

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

Where are the big girls? This is the first time I've seen a bigger lady boy and that's awesome .. you should post more of them here, nothing wrong with a thick black lady

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n^2 - 1

Why do narcissists devour so much sugar (candy, ice cream, donuts, etc., in huge amounts at a time)?

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What are the major security challenges facing India, both domestically and internationally, and how does the government address them?

Move the nub up to the top: