Why is (n-1)(n+1)=n^2-1?
Last Updated: 18.06.2025 12:26
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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
And you are left with almost a square. One less than the square of side n.
If women aren't shallow, why do most tall, good-looking men have girlfriends?
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What are the challenges associated with the birth narratives of Jesus?
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n^2 - 1
The basic answer is that you cross-multiply the values in each factor:
Have you ever been a victim of gaslighting? What happened?
(n - 1)(n + 1)
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Move the nub up to the top:
Are you worried that the 2024 US presidential election will result in a close race?
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n^2 - n + n - 1
So, that’s a rectangle with sides 2 and 4.
What does it mean when a British person says "I can't be asked"?
The more direct answer is to look at a rectangle with sides of n + 1 and n - 1, let’s go with n = 2