20110718: Algebra - 16-Square pieces Expansion Puzzle

The following have submitted the solutions to the puzzle:

1. Ming Yi & Dexter [1st group to complete]
2. Joshua & Eugene [2nd group to complete]
3. Mervin & Akhila [3rd group to complete]
4. Ryan Sio & Max
5. Siddhart & Leighton
6. Matthew & Kashyap
7. Ben & Jia En
8. Ryan Yeo & Darryl
9. Daniel & Devanshi

The original copy will be returned to you.
One of you will keep the original copy in your file, the other will keep the photocopied of your work in the file. 
Note: Up to 2011, 19 July - Received from #1 to #9