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

13.06.2025 03:19

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

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(n - 1)(n + 1)

What are some things you would change about Avatar: The Last Airbender if you were to redo the series?

n^2 - 1

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

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Which album is your favorite that's now 50 years old (from 1975), and what's the best song on the album?

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

Move the nub up to the top:

'Optical neural engine' can solve partial differential equations - Tech Xplore

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

How do you take your erotic photos and how do you choose the poses?

n^2 - n + n - 1

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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

What does it mean when we dream about demons, ghosts, monsters, etc.?

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