If someone could give me the breakdown of how you get the final answer in this equation I will love you forever :D Just need to know how you get 57 so I can apply the same theory to other problems!

I have done it on paint because I haven't got a clue how to write cubed and squared on a keyboard :D

http://img116.imageshack.us/img116/1...gggggggzq6.png

Thanks very much