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

12.06.2025 06:09

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

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n^2 - 1

Can you fly an American flag in the UK in your own private property there? What is the UK’s government stance on that? And if yes, do you also have to fly the UK flag or the American flag can fly solo?

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Move the nub up to the top:

Do you think covid 19 was never as bad as it got made out to be where we needed lockdowns and restrictions?

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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

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n^2 - n + n - 1

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

Why is the covert narcissist actively avoiding me when they see me everyday?

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.

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

My girlfriend lied and said she never gave oral until me. She was very skilled. I’m upset with her lying. Do I dump her?

(n - 1)(n + 1)