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

10.06.2025 00:35

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

What are some common historical misconceptions?

(n - 1)(n + 1)

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

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Why do liberals refuse to define what a woman is and what does that mean for the future of feminism?

The more direct answer is to look at a rectangle with sides of n + 1 and n - 1, let’s go with n = 2

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

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Red Cross says at least 21 killed and dozens shot in Gaza aid incident - BBC

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

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Why does an older married man turn bisexual?

n^2 - n + n - 1

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Move the nub up to the top:

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?

n^2 - 1