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

12.06.2025 00:36

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

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n^2 - n + n - 1

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What is the correct way to say "my pleasure" in French in the context of having given a gift?

n^2 - 1

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Should we consider deporting democrats to Canada?

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(n - 1)(n + 1)

What are the legal obligations of a new homeowner if the previous owner leaves furniture in the house after moving out?

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

Move the nub up to the top:

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Earth's energy balance is rising much faster than scientists predicted, and we have no idea why - Live Science

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

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

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

Why are Democrats at Q so desperate that they keep taking down my links to comments that prove the residents in Ohio have been filing complaints about the Haitians eating the local wildlife from ponds in the local parks? Election interference

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