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

14.06.2025 02:55

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

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(n - 1)(n + 1)

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Why did my ex move on so fast, we have only been broken up for 2 weeks?

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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 the reasons for people being banned from social media sites like Twitter and Instagram? Why is it considered a big deal?

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

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

What are some mind-blowing facts about Michael Jackson?

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n^2 - 1

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Why do you think Filipinos are conservatives?

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

n^2 - n + n - 1

Move the nub up to the top:

Are today’s baseball pitchers faster than a few years ago, or is it that radar guns have improved and get the pitch speed as it is released rather than as it reaches the plate?

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