Why is (n-1)(n+1)=n^2-1?
Last Updated: 18.06.2025 04:12
And you are left with almost a square. One less than the square of side n.
(n - 1)(n + 1)
xxx
Would you let your son wear leggings to school?
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.
n^2 - 1
Why won't Canada build their own fighter jet?
xxxx
Move the nub up to the top:
xx
xxx x
n^2 - n + n - 1
The basic answer is that you cross-multiply the values in each factor:
What are some ways to drive women crazy while many men don't know?
xxx x
The more direct answer is to look at a rectangle with sides of n + 1 and n - 1, let’s go with n = 2
xxx
What are some mind-blowing facts that sound unreal but are actually true?
xxxx