(-2ab^2)^2·(3a^2b-2ab-4b^3)

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(-2ab^2)^2·(3a^2b-2ab-4b^3)(-2ab^2)^2·(3a^2b-2ab-4b^3)(-2ab^2)^2·(3a^2b-2ab-4b^3)原式=(4a²b^4)(3a

(-2ab^2)^2·(3a^2b-2ab-4b^3)
(-2ab^2)^2·(3a^2b-2ab-4b^3)

(-2ab^2)^2·(3a^2b-2ab-4b^3)
原式=(4a²b^4)(3a²b-2ab-4b³)
=12a^4n^5-8a³b^5-16a²b^7