I always thought I was pretty good at algebra, especially the simple stuff, but I saw this yesterday and I still can't figure out where the trick is: (Where a2 is 'a' squared, b2 is 'b' squared and 2b is 2 times 'b'. I can't figure out superscript on here and pasting from word loses the formatting). The steps are numbered to make any potential answers easier to understand. 1. if a = b 2. a2 = ab 3. a2 -b2 = ab- b2 4. (a+b)(a-b) = b(a-b) 5. a+b = b 6. 2b = b 7. 2 = 1 What can't I see?