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

12.06.2025 00:00

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 - 1)(n + 1)

Can the existence of past lives be proven without the use of hypnosis or a pendulum to inquire about previous incarnations?

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

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Is it okay for me to wear girls’ underwear?

n^2 - n + n - 1

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

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

What are some hard truths that MAGA needs to hear?

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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

Is the Donald Trump Bible any different from a regular Bible? Has Trump altered its contents?

n^2 - 1

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What does success really mean to you? Is it about happiness, money, or something else?

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