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

Last Updated: 21.06.2025 00:39

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

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(n - 1)(n + 1)

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If I get served by someone else's papers, am I legally required to inform the person that they got served, or the court that they served the wrong person?

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n^2 - 1

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

Why is North Korea a jail?

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

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

Move the nub up to the top:

Why do so many men on the internet try to compete with women, or try to "humble" and bash them? There's so many videos across my tiktok and YouTube of men claiming how they're wanting to get back at women and put them in thier place.

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My ex got into a relationship within 2 weeks after a breakup. What should I do?

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

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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n^2 - n + n - 1