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

Last Updated: 17.06.2025 09:17

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

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Move the nub up to the top:

If you could go back and rewrite the Legend of Korra, what would you change, and why?

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

He said he loves me, but why is it difficult for him to leave his wife?

n^2 - n + n - 1

(n - 1)(n + 1)

n^2 - 1

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

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

Atheists, there is a god up there in heaven and he loves you so much that he sent his son to die the worst death imaginable and then to turn into a zombie all to save you from sin. Why do you reject him?

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