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

08.06.2025 02:52

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

(n - 1)(n + 1)

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

Move the nub up to the top:

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Has anyone experienced an out of the body experience, as a child, years before you had ever heard the term or understood the implications?

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

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n^2 - n + n - 1

My girlfriend told me that she wants to move in with me. I have my own apartment and I like my peace and quiet, but I also love her. We've been together for a year now. What should I do?

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

If women see themselves as free, dignified, human beings just as good as men, can Trump hang it up and just lose in a landslide at last? How can men who like and respect women help improve womens' self-esteem?

n^2 - 1