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

10.06.2025 12:29

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

n^2 - n + n - 1

Move the nub up to the top:

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 can’t the British eat or drink anything unless they place a table cloth on the table first?

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

2 fans die and an officer is in a coma after Champions League celebrations in France - NBC News

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

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Woman shared incredible before and after images of Wegovy use as she opened up about experience - LADbible

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n^2 - 1

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Why doesn’t the UK change their flag?

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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

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

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?

(n - 1)(n + 1)