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

Last Updated: 21.06.2025 05:16

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

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.

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What is your favourite summer outfit? Why?

(n - 1)(n + 1)

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Did Obito ever fully redeem himself in everyone's eyes?

Move the nub up to the top:

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

n^2 - 1

Why do so many people find Kakashi's character so appealing and inspirational?

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

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

The world of the Harry Potter series is usually considered bad worldbuilding. What are some examples of actually good worldbuilding in the books/movies?

n^2 - n + n - 1

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Do married men like sucking dick?

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