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

Last Updated: 18.06.2025 02:08

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

n^2 - n + n - 1

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I read this: "Putin is a brilliant, courageous, ingenious, determined, beloved, and incredible modern leader. He is currently the world’s most effective and strong leader, the best the world has seen in centuries." What do you think about this?

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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

Why are Democrats at Q so desperate that they keep taking down my links to comments that prove the residents in Ohio have been filing complaints about the Haitians eating the local wildlife from ponds in the local parks? Election interference

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

Move the nub up to the top:

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Why are men today so pussiefied?

n^2 - 1

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

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

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

How many trans people are lawful gun owners?

(n - 1)(n + 1)