Math problem unsolvable, and tomorrow's mah exam.
I posted this a while ago, and it came under some other users name, so deleted it and now :

| a^2 a^2-(b-c)^2 bc |
| b^2 b^2-(c-a)^2 ca |
| c^2 c^2-(a-b)^2 ab|

It has be solved without expanding and with matrices.
Yelp Yelp, exam tomorrow !