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

Last Updated: 20.06.2025 05:27

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

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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

What are the reasons why am I so tired before my period?

n^2 - n + n - 1

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The world of the Harry Potter series is usually considered bad worldbuilding. What are some examples of actually good worldbuilding in the books/movies?

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Hillary thinks we must censor or "we lose total control". Why does she demand total control?

(n - 1)(n + 1)

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

n^2 - 1

Is it possible for sociopaths to feel genuine remorse for their actions or thoughts towards others, even if they are skilled at hiding it from others?

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

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 should the US public listen to Lauren Boebert, the queen of hypocrisy tell us, "We need morals back in our nation" when her real-time video is the heartbeat of immoral? Why does her audio not match her video?

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