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

11.06.2025 08:05

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

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

n^2 - n + n - 1

n^2 - 1

Does CloudFlare protect blackhat sites from DDOS attacks?

Move the nub up to the top:

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

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I am so tired of ignorant people like you calling us far rights, why democrats is so educated, they take things from their own mouth, you guys are totalitarian party?

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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

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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

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

How can a hacker damage me, realistically?

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What does the Bible say about the Antichrist? How will we know when he arrives on the scene?

(n - 1)(n + 1)