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

Last Updated: 18.06.2025 07:09

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

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

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What was your first impression of The Carter V by Lil Wayne? Did it feel like 2008 Wayne, when you heard the first few songs.

n^2 - 1

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

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I just cannot wake up early, even if I sleep on time. What should I do?

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

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Why do atheists love to preach against Abrahamic religions and mock God? Even if they do not fear the eternal fire of hell, pious Muslims will certainly not leave them alone and will take brutal revenge until they surrender and repent of their sins.

Move the nub up to the top:

n^2 - n + n - 1

(n - 1)(n + 1)

Why all the fuss about Trump’s policy initiatives? Isn’t he just trying to set a moral tone for the Republican Party to make America great again?

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

If you cut off the end of that rectangle, you make it smaller, 2 * 3 and a separate nub of size 1 * 2

Why do Republicans only believe in two genders? How do they explain Caitlin Jenner and George Santos?

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