All teams have to be divided.
C22x+9
=
(2x+9)(2x+8)2
=(2x+9)(x+4)
The southern team must be divided into
9 10
(2x+9)(2x+8)2
=
9(x+9)(x+4) 10
Northern teams are always divided into
(2x+9)(x+4) 10
The total score of internal games of southern teams is Cx+92.
The total score of the internal match of the Northern Team is Cx2.
(2x+9)(x+4) 10
-
x(x- 1)2
≥0
Solution:
1 1-
2293
≤x≤
1 1+
2293