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

Last Updated: 19.06.2025 15:40

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

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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

n^2 - n + n - 1

Who is the beast of Revelation 13?

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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

n^2 - 1

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(n - 1)(n + 1)

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Move the nub up to the top:

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

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

Is it possible for the U.S. government to get rid of the constitution for national safety?

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