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

13.06.2025 03:28

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.

Why do I sweat so much after applying moisture or sun screen on my face? I have normal skin.

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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

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Why does my crush make me jealous about having a girlfriend?

n^2 - n + n - 1

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WhatsApp backs Apple in its legal row with the UK over user data - BBC

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

Move the nub up to the top:

n^2 - 1

What is your review of House of the Dragon Season 2 finale, Episode 8?

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

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

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Which type of physical cable has fastest transmission speed?

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