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

Last Updated: 18.06.2025 01:11

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

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Why are Indians so influenced by the Western culture, when the Indian tradition has so much to give?

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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

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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

Move the nub up to the top:

n^2 - n + n - 1

What would you change in the "Game of Thrones" storyline if you were one of the writers of the TV series?

n^2 - 1

(n - 1)(n + 1)

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Is it common for girlfriends to have close male friends who are single and not related to them?

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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Is there a type of function where every point has exactly one tangent line passing through it? If yes, what is this type of function called?

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