10___ / 3 6\
756*\/ x + x*\28 + 63*x + 108*x /
-----------------------------------
28 4 7
10___ 9*x 27*x
x + 27*\/ x + ---- + -----
4 7 4 7
10___ 9*x 27*x
x + 27*\/ x + ---- + -----
4 7 4 7
10___ 9*x 27*x
x + 27*\/ x + ---- + -----
4 7