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

Last Updated: 17.06.2025 15:36

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

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What measures do celebrities take to protect their images from being used for commercial purposes without permission? How much does this typically cost them?

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

How were cows used in ancient India?

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

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Why do I feel so tired all the time even after a good night’s sleep?

Move the nub up to the top:

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

n^2 - 1

Why can’t Trump campaign on the real issues facing America rather than insulting the character of VP Harris? Does MAGA actually believe this tactic will work?

(n - 1)(n + 1)

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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What is price of the "liberal celebrities" e.g. Bill Maher, Seth Meyers, Jon Stewart, Trevor Noah, Jimmy Kimmel, Desi Lydic etc. to join the great MAGA movement like Stephen Colbert who wanted to European ambassadorship to turn back on "the Left"?

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