(2a3)4 · (3a2)3 =
a
(16a5)2 : (8a3)3 =
a
(6a4)2 : (2a2)3 =
a
(10a4)4 : (5a3)4 =
a
(4a3)3 : (5a4)2 =
a
(6a6)4 : (12a10)2 =
a
(12a3)2 : (4a2)2 =
a
(2a7)4 · (5a2)2 =
a
(5a3)2 · (2a4)3 =
a
(3a5)3 · (9a7)2 =
a