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

Last Updated: 17.06.2025 09:26

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

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

n^2 - n + n - 1

Why did Kamala say immigrants eating cats isn’t real when there’s police bodycam footage of it happening?

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

Move the nub up to the top:

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How do you handle your mother-in-law after you heard her talking badly about you in the next room?

(n - 1)(n + 1)

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How should an atheist respond to a religious person who asks, "Why do you hate God?" What are some appropriate and inappropriate ways to answer this question?

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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

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

What ended your relationship with your best friend?

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n^2 - 1

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What is the recommended approach for creating a film or TV script? Should the script be written first or should the story be developed first? Why?

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