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

Last Updated: 18.06.2025 02:34

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

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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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 wokes use words like "homophobes" when they don't know what that means? Do they realize that no one is afraid of them?

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

n^2 - n + n - 1

Why do guys on dating apps often just first message "hey" or "hey how are you" instead of being more creative and unique? How do they think being a copycat will stand out?

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(n - 1)(n + 1)

Move the nub up to the top:

What is a common thought that keeps people up at night? Why do some people experience this?

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

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n^2 - 1

Does meth make women super horny like it does men?

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