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

10.06.2025 06:39

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

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n^2 - n + n - 1

Move the nub up to the top:

What do porn stars do when they get old?

(n - 1)(n + 1)

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

What is the opposite personality type of someone with ASPD (antisocial personality disorder)?

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n^2 - 1

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Charting the Global Economy: US GDP Falls on Larger Trade Hit - Bloomberg

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

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Kohler's $51M Arizona award terminated by Department of Energy - ABC15 Arizona

If you cut off the end of that rectangle, you make it smaller, 2 * 3 and a separate nub of size 1 * 2

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

The more direct answer is to look at a rectangle with sides of n + 1 and n - 1, let’s go with n = 2

If you could go back and rewrite the Legend of Korra, what would you change, and why?

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