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

Last Updated: 17.06.2025 02:55

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

(n - 1)(n + 1)

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Why do women need to wear bras, in spite of the fact that the breasts are an integral part of the body?

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

Move the nub up to the top:

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How would you define love?

n^2 - n + n - 1

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

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Why cant a narcissist admit when they are wrong?

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

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What are your thoughts on Italian nationalist poet Gabriele D'Annunzio, who was the subject of the documentary "Fiume o morte!"?

n^2 - 1

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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What nonsense did you hear today in India that made you laugh?

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