Why is (n-1)(n+1)=n^2-1?
Last Updated: 20.06.2025 05:53
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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
If freedom of speech is absolute, how come it's not applied for private spaces and for the Internet?
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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.
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The basic answer is that you cross-multiply the values in each factor:
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Move the nub up to the top:
(n - 1)(n + 1)
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I always feel very tired after I do some exercises, even after a night's sleep. What's the problem?
n^2 - n + 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
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One Fitness Accessory Makes You Up to 7 Times More Likely to Stay Active - ScienceAlert
n^2 - 1