作业帮-3m(a^2b)^2-[-2/3m^2(ab)^3]等于多少..
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![-3m(a^2b)^2-[-2/3m^2(ab)^3]等于多少..](/uploads/image/z/12879332-44-2.jpg?t=-3m%28a%5E2b%29%5E2-%5B-2%2F3m%5E2%28ab%29%5E3%5D%E7%AD%89%E4%BA%8E%E5%A4%9A%E5%B0%91..)
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-3m(a^2b)^2-[-2/3m^2(ab)^3]等于多少..
-3m(a^2b)^2-[-2/3m^2(ab)^3]等于多少..
-3m(a^2b)^2-[-2/3m^2(ab)^3]等于多少..
-3m(a^2b)^2-[-2/3m^2(ab)^3]
＝-3ma^4b^2+2/3m^2a^3b^3
=ma^2b^2(2/3mab-3a^2)