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

12.06.2025 00:03

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

n^2 - 1

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(n - 1)(n + 1)

I’m 17 and looking for a girl. What do I do?

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n^2 - n + n - 1

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Everyone says the pet population is out of control. Everyone says you MUST spay or neuter your pets. No one wants to talk about how its almost $1,000 to spay or neuter a pet. Why is it so expensive if its so necessary? Animal shelters do it for free.

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

Why do humans sweat while stressed?

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

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

What would you do if you found out that someone had broken into your home while you were sleeping?

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

Move the nub up to the top:

Is it very wrong to want to spend some time with husband after continuous work for 5 days in a weekend because my husband thinks if we go out every weekend what night my parents and other family members think?

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