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

15.06.2025 09:37

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

n^2 - n + n - 1

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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

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

n^2 - 1

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

(n - 1)(n + 1)

How do you handle your mother-in-law after you heard her talking badly about you in the next room?

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

Is it possible to achieve spiritual enlightenment while being in a romantic relationship?

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

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Move the nub up to the top:

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

Which Bibles can one read and be confident they are reading the inerrant word of God?

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