-4(a²-2ab)×9a²-(9ab³+12a的四次方b²)÷(3ab),其中a=-1,b=-2
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![-4(a²-2ab)×9a²-(9ab³+12a的四次方b²)÷(3ab),其中a=-1,b=-2](/uploads/image/z/5301294-6-4.jpg?t=-4%EF%BC%88a%26%23178%3B-2ab%EF%BC%89%C3%979a%26%23178%3B-%EF%BC%889ab%26%23179%3B%2B12a%E7%9A%84%E5%9B%9B%E6%AC%A1%E6%96%B9b%26%23178%3B%EF%BC%89%C3%B7%EF%BC%883ab%EF%BC%89%2C%E5%85%B6%E4%B8%ADa%3D-1%2Cb%3D-2)
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-4(a²-2ab)×9a²-(9ab³+12a的四次方b²)÷(3ab),其中a=-1,b=-2
-4(a²-2ab)×9a²-(9ab³+12a的四次方b²)÷(3ab),其中a=-1,b=-2
-4(a²-2ab)×9a²-(9ab³+12a的四次方b²)÷(3ab),其中a=-1,b=-2
原式=-36a²(a²-2ab)-9ab³÷(3ab)-12a^4b²÷(3ab)
=-36a^4+72a³b-3b²-4a³b
=-36a^4+68a³b-3b²
=-36+136-12
=88