问题标题:
5(3a^2b-ab^2)-(ab^2+3a^2b)怎么化简
问题描述:

5(3a^2b-ab^2)-(ab^2+3a^2b)怎么化简

黄兴博回答:
  5(3a^2b-ab^2)-(ab^2+3a^2b)   =15a^2b-5ab^2-ab^2-3a^2b   =(15-3)a^2b-(5+1)ab^2   =12a^2b-6ab^2.
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