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

15.06.2025 10:04

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 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.

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

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

Are you more of a butt guy or a boob guy?

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Move the nub up to the top:

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

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?

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

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Why is the internet so restrictive? Why is it impossible to find a place where you can express yourself fully?

n^2 - n + n - 1

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n^2 - 1

What is the process of becoming an Evangelical preacher? Is attending seminary school necessary? How long does it typically take? Is it financially challenging?

(n - 1)(n + 1)