Why is (n-1)(n+1)=n^2-1?
12.06.2025 07:29
xxxx
xxxx
If you cut off the end of that rectangle, you make it smaller, 2 * 3 and a separate nub of size 1 * 2
60 years ago, Ed White went out for walk photo of the day for June 3, 2025 - Space
xxx
xxx x
The basic answer is that you cross-multiply the values in each factor:
What do you typically do while on meth?
xxx
Move the nub up to the top:
(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
n^2 - n + n - 1
So, that’s a rectangle with sides 2 and 4.
xx
And you are left with almost a square. One less than the square of side n.
FX’s ‘Alien: Earth’ Official Trailer Reveals a Predatory Twist - The Hollywood Reporter
xxx x