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

09.06.2025 01:53

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

n^2 - 1

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What does it mean when a guy says he doesn't want to ruin the friendship? Is he rejecting me or is there another explanation? Why would a guy choose not to risk the friendship if he has feelings for me?

n^2 - n + n - 1

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

Move the nub up to the top:

Why do nearly all of the answers on Quora have “read more” and when I click on it, I get a virus warning every time? Has anyone else had this happen?

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.

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I am married for 3 years. My husband keeps pressing my boobs 40-50 times a day. He never stops though I ask him not to. What I should do to stop it?

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(n - 1)(n + 1)

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Why did the Soviet Jews hate the Soviet Union?

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.

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How many wishes do people get on their birthday?

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