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

Last Updated: 20.06.2025 06:47

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

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This is a real question: Why do a lot of men/boys hate (yes, hate) women that voice their criteria in choosing a partner? Even when the criteria is sane and responsible. Besides it being, sadly, an effective mating strategy, why does it exist?

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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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Why do some young mothers trick a guy into believing that they're pregnant and it's their child when years later they find out that it's not even theirs should he still pay child support or not?

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

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

n^2 - n + n - 1

Why does Nickelback, a popular Canadian alternative-rock band, receive so much hate? Is it because they are not considered "edgy" by some people?

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n^2 - 1

Move the nub up to the top:

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

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

(n - 1)(n + 1)

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

What habits do happy couples have?

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