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

Last Updated: 19.06.2025 01:30

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

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(n - 1)(n + 1)

Is it okay for my husband to help other ladies without telling me?

n^2 - n + n - 1

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n^2 - 1

If I only have a fire extinguisher to defend myself against some threat from people, should I spray them for max damage or just hit them with the fire extinguishers?

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

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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?

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

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

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

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How can someone express their love for a guy without using words? What are some actions that can convey love and care?

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