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

11.06.2025 02:16

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

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Why is the First Amendment referred to as a right to free speech instead of an immunity from punishment for one's words, regardless of their truthfulness?

Move the nub up to the top:

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n^2 - n + n - 1

What do you think of Vance using a clip of an embarrassed teenager from almost 20 years ago in an attempt to bully Kamala Harris?

(n - 1)(n + 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

n^2 - 1

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

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

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

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?

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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

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