(负2ab的2次方)的2次方×(3a的2次方b-2ab-1)

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(负2ab的2次方)的2次方×(3a的2次方b-2ab-1)

[(-2ab)²]²×(3a²b-2ab-1)
=16a^4·b^4(3a²b-2ab-1)
=48a^6·b^5-32a^5·b^5-16a^4·b^4
如果是(-2ab²)²×(3a²b-2ab-1)
=4a^2·b^4(3a²b-2ab-1)
=12a^4·b^5-8a^3·b^5-4a^2·b^4