若4a²-mb与2a³b是同类项 求m²-(3mn+3n²)+2²对不起~就是求m²-(3mn+3n²)+2²
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若4a²-mb与2a³b是同类项 求m²-(3mn+3n²)+2²对不起~就是求m²-(3mn+3n²)+2²
若4a²-mb与2a³b是同类项 求m²-(3mn+3n²)+2²
对不起~就是求m²-(3mn+3n²)+2²
若4a²-mb与2a³b是同类项 求m²-(3mn+3n²)+2²对不起~就是求m²-(3mn+3n²)+2²
若4a²-mb与2a³b是同类项
2-m=3
m=-1 题目有误
m²-(3mn+3n²)+2²=1-
不是的,原题中没有n