14.0 + 2.0*b + 10.0/b + 9.0*a - 7.0/a^2
2 2 3 2 2 -7*b + 2*a *b + 4*b*a + 5*a *(2 + a*b) + 14*b*a -------------------------------------------------- 2 a *b
2 2 3 2 2 -7*b + 2*a *b + 4*b*a + 5*a *(2 + a*b) + 14*b*a -------------------------------------------------- 2 a *b
2 2 2 3 2 -7*b + 10*a + 2*a *b + 9*b*a + 14*b*a ----------------------------------------- 2 a *b