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

Last Updated: 19.06.2025 05:48

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

n^2 - n + n - 1

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

n^2 - 1

Did your siblings abuse you growing up? Not your parents, specifically your siblings, or other children in the household you were raised with.

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 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?

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

If you cut off the end of that rectangle, you make it smaller, 2 * 3 and a separate nub of size 1 * 2

Move the nub up to the top:

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

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Why does Filipino culture dictate that parents should be treated as gods?

(n - 1)(n + 1)

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