/ 2 2\ / 2 \
\- b + 4*a /*\6*a - 3*a*b/
----------------------------
3
6*a *(-b + 2*a)
6a3(2a−b)(4a2−b2)(6a2−3ab)
/ 2 2\
/ 2 3*a*b\ | b 4*a |
|3*a - -----|*|- -- + ----|
\ 2 / \ 3 3 /
----------------------------
3
a *(-b + 2*a)
a3(2a−b)(34a2−3b2)(3a2−23ab)
(3*a^2 - 3*a*b/2)*(-b^2/3 + 4*a^2/3)/(a^3*(-b + 2*a))