(a/b)^3.(a/b):(a/b)^4
[(a/b)^3 ]^2
[(a/b)^(-2) ]^3
[(a/b)^(-4) ]^2:(a/b)^(-7)
(a/b)^(-4)
(a/b)^(-2).(a/b)^6
(a/b)^5:(a/b)^3
(a/b)^6
(a/b)^2
1
(a/b)^4
(b/a)^4
(b/a)^6
b/a
