(-2a^2b)^3(-3ab^3)^2

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(-2a^2b)^3(-3ab^3)^2(-2a^2b)^3(-3ab^3)^2(-2a^2b)^3(-3ab^3)^2(-2a^2b)^3(-3ab^3)^2=(-8a^6b^3)(9a^2b^6)

(-2a^2b)^3(-3ab^3)^2
(-2a^2b)^3(-3ab^3)^2

(-2a^2b)^3(-3ab^3)^2
(-2a^2b)^3(-3ab^3)^2
=(-8a^6b^3)(9a^2b^6)
=-72a^8b^9

(-2a^2b)^3(-3ab^3)^2
=(-8a^6b^3)(9a^2b^6)
=-72a^8b^9