6·(6·x2 - 4)·e- 1/x^2/x7 - 2·(6·x2 - 4)·e- 1/x^2/x9 - 12·e- 1/x^2/x5
(36·x2 - 24)·e- 1/x^2/x7 - (12·x2 - 8)·e- 1/x^2/x9 - 12·e- 1/x^2/x5
(36·x4 - 24·x2)·e- 1/x^2/x9 - (12·x2 - 8)·e- 1/x^2/x9 - 12·x4·e- 1/x^2/x9
((36·x4 - 24·x2) - (12·x2 - 8) - 12·x4)·e- 1/x^2/x9
(36·x4 - 24·x2 - 12·x2 + 8 - 12·x4)·e- 1/x^2/x9
(24·x4 - 36·x2 + 8)·e- 1/x^2/x9