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

Last Updated: 19.06.2025 11:46

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

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

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

(n - 1)(n + 1)

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?

n^2 - 1

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Move the nub up to the top:

Pope Leo XIV delivers message of peace, unity at Rate Field in first address to his hometown - Chicago Sun-Times

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

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

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Why are Trump supporters so incredibly stupid?

n^2 - n + n - 1

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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 your thoughts on the trend of Americans labeling themselves as "TikTok refugees" and migrating to the Chinese social media platform RedNote (Xiaohongshu)?

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What should every American know before traveling to the UK?

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