化简:18x²-[6xy²-(xy²-12x²y³)]

来源:学生作业学帮网 编辑:学帮网 时间:2024/05/15 10:36:09

化简:18x²-[6xy²-(xy²-12x²y³)]

18x²-[6xy²-(xy²-12x²y³)]
=18x²-[6xy²-xy²+12x²y³)]
=18x²-5xy²-12x²y³