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

15.06.2025 03:48

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

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

Move the nub up to the top:

What are the possible reasons for people feeling depressed after the holiday season? Why does being alone exacerbate these feelings?

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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

I took a video of my serve (60 FPS) and it took 0.4 seconds from my racket to the service line. How fast would you say my serve was?

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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

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How exactly do things get smuggled into prison? Does the sender hide it inside something else very well? Does someone put it in their butt? Do the prisoners make deals with the officers?

n^2 - 1

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

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Why do atheists always argue about the existence of suffering in the world as meaning God doesn't exist when it doesn't prove anything?

(n - 1)(n + 1)

n^2 - n + n - 1

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

Why am I more attracted to black men?

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