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

09.06.2025 05:09

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

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In what ways does Islam oppress women?

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

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

Why are black people seen as scary or a threat to some people?

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n^2 - n + n - 1

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

To a flat Earther, what's wrong with the idea that gravity is simply a force inherent to space which operates only in one dimension? Why do they go further and try to deny gravity rather than just saying it's different than physicists claim?

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Move the nub up to the top:

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What is the nastiest thing you had your wife do and she loved it?

(n - 1)(n + 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

DF Weekly: Why would Microsoft "sideline" its next generation handheld? - Eurogamer

n^2 - 1