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

Last Updated: 22.06.2025 02:00

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

n^2 - 1

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

Why are AI Code Assistant and "multimodal AI" experiencing significant growth, indicating a rising interest in advanced AI tools?

(n - 1)(n + 1)

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Move the nub up to the top:

Is it true or false that Andrew Tate announced that he is running for prime minister of the UK under a new political party called 'BRUV' or something like that?

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

Does the U.S military really prosecute military staff for cheating on their spouse, or do they close one eye if the cheating does not involve other military personnel since adultery is fairly common? Adultery is illegal in U.S military

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

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

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n^2 - n + n - 1