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

11.06.2025 02:14

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

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

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How does growing up in chaos affect a child as they become an adult?

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Move the nub up to the top:

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?

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

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n^2 - 1

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

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Why does my narcissistic ex told me that he f*cked and sleep with other woman and then at the end says that it also happened because of me?

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)

The more direct answer is to look at a rectangle with sides of n + 1 and n - 1, let’s go with n = 2

What are some mind-blowing facts that sound unreal but are actually true?

n^2 - n + n - 1