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

Last Updated: 21.06.2025 16:58

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

n^2 - 1

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

Move the nub up to the top:

Why did Obito, a supposed "bad person," do good things for Kakashi?

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

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Does the interpretation of the Book of בראשית create in all generations the Chosen Cohen People יש מאין?

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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

The International Boxing Association said that Khelif and Lin competing in Paris Olympics were disqualified from the tournament for testing positive for XY chromosomes which give an unfair advantage in the women’s division. What do you think?

n^2 - n + n - 1

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Why are white women not interested in dating Asian men? Are they not attractive to you at all?

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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

(n - 1)(n + 1)

What caused the decline of the Soprano crew?

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