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

10.06.2025 08:34

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

(n - 1)(n + 1)

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

n^2 - 1

If my boyfriend watches porn, does it mean he doesn’t think I’m good enough? If I am good enough, why does he still watch? Am I not beautiful enough?

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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

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

I'm a 28-year-old guy who has never been in a relationship, nor can I seem to find someone who wants to be in one with me. Why do I feel like a freak?

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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Move the nub up to the top:

What were the first few days, weeks, months and then years like after finding out about your spouses infidelity? How did your feelings, and yours & their approach to the situation change in the immediate aftermath compared to later down the line?

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n^2 - n + n - 1

Is the Democrat party connected with organized crime in America?

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