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

Last Updated: 17.06.2025 14:41

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

Why are people so terrified or bothered that a person has original creative ideas, hobbies or unique interests?

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Move the nub up to the top:

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Why do older siblings always hate younger siblings?

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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

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

Why is watching a man and a woman have sex considered perverted? It's how we all got here, it's what we do, I say if you want to watch porn then carry on!

n^2 - 1

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

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Dear atheist, do you realise that there is a God watching over you who will one day judge and condemn you for every wrong thing you have said and done before casting you into the lake of fire?

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

(n - 1)(n + 1)

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Do you consider masturbating to porn cheating if you are married?

n^2 - n + n - 1