Multiplication explanation needed

(b - c)(c - a)(a - b) = abc -a^2b - b^2c + ab^2 - ac^2 + a^2c + bc^2 - abc

Took it from thread http://www.mathhelpforum.com/math-he...z-help-me.html I have forgotten how multiplication worked with so many erm... numbers. He has reordered multiplications to look nicer, but it makes it hard to track where he started and ended it.

Can someone link me to tutorial which teaches such multiplication, has it a name? I am in this forum new and trying to learn expression simplifying. I will check tomorrow for replies.

By the way how he got so nice layout of that expression. I mean it is image stored on site, can I do same and learn how to "write" such images?