Problem C. 1312. (October 2015)
C. 1312. Suppose that \(\displaystyle xy+x+y=44\) and \(\displaystyle x^2y+xy^2=448\). Then evaluate \(\displaystyle x^2+y^2\).
M&IQ
(5 pont)
Deadline expired on 10 November 2015.
Statistics:
>275 students sent a solution.  
5 points:  179 students. 
4 points:  33 students. 
3 points:  20 students. 
2 points:  4 students. 
1 point:  17 students. 
0 point:  13 students. 
Unfair, not evaluated:  6 solutions. 
Unfair, not evaluated:  3 solutions. 
