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

15.06.2025 04:35

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

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Why did it take seven days for troops with helicopters, equipment, supplies, food, and water to be dispatched to southeast storm zones?

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Move the nub up to the top:

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

What were my 10 favorite great rock albums that were either forgotten or hardly known by the rock community at large during 1965-‘75?

n^2 - n + n - 1

(n - 1)(n + 1)

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What causes you to be tired all the time and major headaches?

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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:

My boyfriend always verbally abuse me and makes me cry. If I try to tell him how hurt I was, he says to me he loves me and can't hurt me but always abuse me. Why?

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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Who is someone that inspires you?

n^2 - 1