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

Last Updated: 16.06.2025 19:51

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

Move the nub up to the top:

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

n^2 - n + n - 1

Do you think trump realizes that if he significantly decreases the size of CIA, that there is a higher chance of him being assassinated?

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.

(n - 1)(n + 1)

Do people really have sex with animals?

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I’m worried I have a bat bite on my hand, I have two small marks about 1 cm apart. I haven’t been in contact with a bat but I’m worried about at night. My fingers have a slight tingling sensation and my arm feels cold but isn’t. Am I ok?

n^2 - 1

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

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Why is blood sugar ranging from 70-180 in a day and checked through a glucometer?

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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

There is any scientific evidence that we live in a sphere. Why do others say that we lives in a flat Earth but there is no evidence that they have proven the existence of a flat earth?

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