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

Last Updated: 25.06.2025 01:17

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

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Knicks' Decision to Fire Tom Thibodeau Was Brewing For 'Months' - Sports Illustrated

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n^2 - n + n - 1

'Cosmic miracle!' James Webb Space Telescope discovers the earliest galaxy ever seen - Yahoo

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Move the nub up to the top:

Why do women wear less clothes compared to men?

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

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

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

Why don’t the little sugar breeches gun owners understand that life isn’t all sunshine and rainbows?

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

(n - 1)(n + 1)

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

If we colonized Mars, what would a human being from Mars be called? I’d assume Martian just as one from Earth is called an Earthling or Terran in the case of Sci-Fi media.

n^2 - 1