Why is (n-1)(n+1)=n^2-1?
11.06.2025 18:56
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Move the nub up to the top:
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n^2 - 1
And you are left with almost a square. One less than the square of side n.
n^2 - n + n - 1
When Chinese people see my pets, will they think of it as their food?
The basic answer is that you cross-multiply the values in each factor:
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8 best walking exercises that will help us lose 3-4 kgs within a month - Times of India
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 - 1)(n + 1)
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The Apartment Glut Is Ending and Demand Is Rising. Rents Are Headed Up, Too. - Barron's
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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Why would Joseph Smith say that polygamy was God's law?
So, that’s a rectangle with sides 2 and 4.