Answer:
729/64
Step-by-step explanation:
= (3/2 a^-2b^2)^2
= 3^2 b^4 / 2^2 a^4
= 9b^4 / 4a^4
Plug in a = -2 and b = -3
= 9(-3)^4 / 4(-2)^4
= 9(81) / 4 (16)
= 729/64
