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

Last Updated: 17.06.2025 00:06

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

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

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Was Jimmy Carter a good President of the United States?

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

Why, after a divorce, would one still want to ruin the other one’s life?

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

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n^2 - 1

What are some reasons why men may not want to date a woman who can pay her own bills?

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

How did the DMK alliance manage to keep the BJP out of Tamil Nadu politics all these years? Is the picture now changing in Tamil Nadu after the entry of Annamalai?

(n - 1)(n + 1)

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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

How did you as a human being change while growing up?

n^2 - n + n - 1