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

16.06.2025 00:10

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

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(n - 1)(n + 1)

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

If an abortion doesn’t affect you, why do people make it a big deal?

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n^2 - 1

When a dog smells another dog’s poo or wee, do they then remember that scent for when they smell it again, or even further know which dog they are smelling if they know the dog?

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

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

What legal actions can be taken if a neighbor's unleashed dog causes harm or injury?

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

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Why do some people refuse to explain their actions or behavior when asked? Why do they claim to not know the reason instead of providing an explanation?

Move the nub up to the top:

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n^2 - n + n - 1

Why are liberals so bad at grasping alternative facts? For example, if something doesn’t happen the exact same way Trump described it, liberals dismiss it as false; while conservatives are able to fully understand the underlying principle.

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