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

14.06.2025 03:56

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

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n^2 - n + n - 1

If you cut off the end of that rectangle, you make it smaller, 2 * 3 and a separate nub of size 1 * 2

Why are you a Muslim? Why is it Islam for you and not something else?

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(n - 1)(n + 1)

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Why do good-looking men date homely women?

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

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What does it mean when you dream that your mother died?

n^2 - 1

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

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Is it possible to run away from home at 16? What are some essential items to bring for survival?

Move the nub up to the top:

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

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How would you advertise if you wanted to be a "tour guide" who can take you through the dark web while warning you what not to look at and not to click on?

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