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

13.06.2025 19:00

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

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n^2 - n + n - 1

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(n - 1)(n + 1)

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Why is Donald Trump criticized by so many people?

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

n^2 - 1

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What happens if a parent refuses to let their child be transgender? What happens if the parent tries their hardest not to allow their child to be trans, like flushing every bottle of their trans child's HRT down the toilet?

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

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Move the nub up to the top:

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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

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

Where did Kamala Harris learn how to change positions so quickly? Did she learn it from working in the world's oldest profession?

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