Why is (n-1)(n+1)=n^2-1?

13.06.2025 21:42

Why is (n-1)(n+1)=n^2-1?

xx

xxx x

The basic answer is that you cross-multiply the values in each factor:

I caught my husband of 20 years looking at inappropriate pics of women on TikTok or Instagram. I'm not sure., but when I told him he got mad and made excuses of why they popped up. I then told him how I've snuck on his phone and saw what he's been looking at . We had a horrible big fight. I asked him why did he even marry me when I see the type he likes . Nothing like me, I'm petite, blonde and blue eyes. These women are dark haired dark eyed and have curvy bodies, large breasts, etc. I just don't feel the same about him after this. I can't get over this

xxx x

n^2 - n + n - 1

xxx

Have you ever had a weird experience immediately following the death of a loved one that made you think there is an afterlife and that the deceased person was communicating with you?

The more direct answer is to look at a rectangle with sides of n + 1 and n - 1, let’s go with n = 2

If you cut off the end of that rectangle, you make it smaller, 2 * 3 and a separate nub of size 1 * 2

(n - 1)(n + 1)

What is the most gay experience with your dad?

Move the nub up to the top:

xxxx

And you are left with almost a square. One less than the square of side n.

Would you join a gym or workout at home and why?

xxx

n^2 - 1

So, that’s a rectangle with sides 2 and 4.

What are LGBT+ people tired of hearing?

xxxx