Why is (n-1)(n+1)=n^2-1?
08.06.2025 06:39
xxx
The basic answer is that you cross-multiply the values in each factor:
xxx x
Why does an older married man turn bisexual?
If you cut off the end of that rectangle, you make it smaller, 2 * 3 and a separate nub of size 1 * 2
n^2 - n + n - 1
xxx x
Adam Sandler will cast Derrick Henry in a movie if he rushes for 2,000 yards - NBC Sports
And you are left with almost a square. One less than the square of side n.
The more direct answer is to look at a rectangle with sides of n + 1 and n - 1, let’s go with n = 2
xx
Are there any nude pictures of women with big tits?
xxxx
So, that’s a rectangle with sides 2 and 4.
n^2 - 1
Move the nub up to the top:
xxx
xxxx
What transforms the philosophical intellect?
(n - 1)(n + 1)