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

12.06.2025 05:55

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

n^2 - n + n - 1

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

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Why do men love boobs (irrespective of big or small)?

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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n^2 - 1

I see ugly guys dating gorgeous, "hot" women all the time. I, too, am not very attractive but I'm not doing well with the ladies. What's their secret?

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Move the nub up to the top:

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This Type of Fiber Could Have Weight Loss Benefits Similar to Ozempic - ScienceAlert

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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

(n - 1)(n + 1)

Why aren't U.S. prisons more like Marine Corps boot camp, were every second of the day there are mandatory activities so that at night everyone is so tired they go to sleep until wakeup at 5:30 am? Would this make prisons safer for all?

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

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How are max different from medical and minimum security prisons?

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