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

13.06.2025 14:21

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

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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 is the reason for The Acolyte (2024 series) having poor reception among Star Wars fans?

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n^2 - n + n - 1

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For those who were actually old enough to have experienced the 1970s and not for those who were born in the 70s. What were the pros and cons of that era?

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

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Why are white women so overly emotional?

n^2 - 1

(n - 1)(n + 1)

Move the nub up to the top:

So I’m getting piano lessons and my teacher wants me to get an upright piano instead of a keyboard. An upright piano is way above my price range, so what do I do? And what’s the difference between an upright piano and a keyboard?

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

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

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What are the pros and cons of banning homosexuality?

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