Another notice, now I know how he got the a+b=b out! It was like this: (a+b)(a-b)/(a-b)=b(a-b)/(a-b). Now we just have to figure out how he got the (a+b)(a-b)=b(a-b)... Let me see... (a+b)(a-b)=a^2-b^2... No, don't understand that one...

Übereil


Brain: an apparatus with which we think we think.

Ambrose Bierce