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

11.06.2025 00:21

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

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

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n^2 - n + n - 1

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Why do people have trouble accepting the very true fact that "The Blue Marble" photo of Earth is a composite and therefore (just like every other subsequent "picture" of Earth NASA has ever shown us) not a real photo but computer generated?

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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(n - 1)(n + 1)

My wife always forces me to suck my bulls dick and balls and even Lick his cum from her face and tits and they even humiliate me very badly plus she always talks about big Dicks everywhere everytime and show me pics of huge cocks what should I do ?

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

n^2 - 1

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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:

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

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