2ab·(-3)(ab)²= -6a³b³
-2a²·(-3)b³ = 6a²b³
(ab²)²·(-4a)²= a²b⁴·16·a²=16a⁴b⁴
b·(-3a)³·a² = -27a⁵b
ab·(-2)·(4a)³ = -128a⁴b
3a·(-2b)²·3b=3a·4b²·3b= 36ab³
2ab·(-4)·(3a)²= 2ab·(-4)·9a²= -72a³b
3a·(-2)·(2b)³= -6a·8b³= -48ab³
ab·4a·(-3b)³= 4a²b·(-27)·b³= -108 a²b⁴
(2ab)²·(-3)·b= 4a²b² · (-3)b= -12a²b³