Question 45453
(-3ab)^2 (-2ab)^3 [Use CAP 6 key for the exponent sign]
((-3)^2a^2b^2) ((-2)^3a^3b^3)  [I added parenthesis for emphasis]
(9a^2b^2)(-8a^3b^3)
(9)(-8)a^5b^5
-72a^5b^5

Otherwise, I agree with your answer.  You did a good job!!!

Here are some rules to remember:
-3^2 = (-1)3^2 = (-1)(9) = -9 [The negative sign does not belong to the 3, it is really multiplying by (-1)]
.
(-3)^3 = (-3)(-3) = 9 [The negative sign belongs to the 3 because it is within the parenthesis]
.
-3^3 = (-1)(3)^3 = (-1)(27) = -27
.
(-3)^3 = (-3)(-3)(-3) = (9)(-3)= -27