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

08.06.2025 00:06

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

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

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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Do you agree with the characterization of Trump's trial as a "modern day Salem witch trial"? Why or why not?

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 can the citizens of Russia accept the enormous difference between people? The richest 500 Russians own more than the poorest 99.8% of the entire Russian population combined. Why don't we see any protests?

n^2 - 1

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

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

Why are so many US conservatives in this day and age still against racial mixing? They won't say it in public, but they are still against the mixing between Blacks and whites? Why?

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Move the nub up to the top:

n^2 - n + n - 1

Why am I peeing so much without drinking a lot of water? I checked my blood sugar and it is normal. Could it be something else?

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(n - 1)(n + 1)

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Jonathan Anderson has been appointed sole creative director of Dior - Vogue Business

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