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

15.06.2025 10:36

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

Move the nub up to the top:

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

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What is the reason for the high rate of unmarried individuals in America, particularly among males?

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n^2 - n + n - 1

When a black man and a white woman have a child, does the child become white? If a white man and a black woman have a child, does the child become black?

n^2 - 1

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

(n - 1)(n + 1)

Are evolutionists giving evolution a bad name by claiming humans started off as shrews?

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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

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

Do you think President-Elect Donald Trump won the presidency fair and square, or do you think the GOP resorted to blatant unlawful practices to tilt the election?

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