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

Last Updated: 20.06.2025 03:07

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

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

(n - 1)(n + 1)

Why is going on a date today so much different than it was when I was young?

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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Move the nub up to the top:

Its year 2041, and president Hunter Biden has ordered every republican who sweared at him to be arrested and shot. I am on my way to the death row listening to the cheer of the Liberal mob chanting death death death. How can I escape?

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

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Apple’s Music app in iOS 26 gains my favorite feature from the Mac - 9to5Mac

n^2 - 1

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

What’s something you did a lot as a kid that you don’t miss now that you’re an adult?

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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

n^2 - n + n - 1

Do Republicans realize that the power of the people is invested in 'representative government'? If so, why did they elect a pathological liar?

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