For those of you who really still are remedial:
|
Originally Posted by Greybone
(a+b)(a-b)=b(a-b)
|
a-b = a-a = b-b = 1-1 = 257-257 = 0
I think I saw that for the first time on some Hopkins CTY test or something like 9 years ago in middle school... I just stared at it for like 10 minutes and then went
Ohhhhhhhh duh I'm slow.