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

10.06.2025 04:27

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

n^2 - n + n - 1

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Move the nub up to the top:

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Is it better for 2nd generation Western Muslims to marry someone from their parents' country or a western Muslim who was born and raised in the West?

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

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

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?

n^2 - 1

(n - 1)(n + 1)

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

Why do liberals think same-sex marriage is alright? The Bible makes it very clear that it's not alright to be gay, why can't liberals understand that?

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