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

14.06.2025 02:31

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

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n^2 - 1

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

In the New Testament, Christ quotes the Ethiopian book of Enoch. How do the Sola Scriptura folks square this circle?

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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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Which feels physically better for guys: vaginal sex or anal sex?

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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

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

Even Captain James T. Kirk was trapped in a woman's body. Don't you think he'd support trans people?

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(n - 1)(n + 1)

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

Can a bride cheat on her groom at a wedding?

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n^2 - n + n - 1

Do you think some men have sex with prostitutes because they're too afraid to talk to women? Money does the talking for them.

Move the nub up to the top: