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

09.06.2025 08:31

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

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n^2 - 1

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I saw a post on X which says "control your lust & you'll understand how boring 90% of women are." What do you think about it? Do you agree or disagree? Why?

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

(n - 1)(n + 1)

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Why do a lot of women have a crush on my boyfriend when they know he is in a relationship with me? I am starting to feel insecure too. What should I do?

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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Why is there so much hate against black people?

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

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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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n^2 - n + n - 1

When writing a novel, how can a character be developed well, but QUICKLY?

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