计算-(x²y+3xy-4)+3(x²y-xy+2)
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/27 07:03:42
计算-(x²y+3xy-4)+3(x²y-xy+2)
计算-(x²y+3xy-4)+3(x²y-xy+2)
计算-(x²y+3xy-4)+3(x²y-xy+2)
-(x²y+3xy-4)+3(x²y-xy+2)
=(-x²y+3x²y)+(-3xy-3xy)+(4+6)
=2x²y-6xy+10
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来源:学生作业帮助网 编辑:作业帮 时间:2024/06/27 07:03:42
计算-(x²y+3xy-4)+3(x²y-xy+2)
计算-(x²y+3xy-4)+3(x²y-xy+2)
计算-(x²y+3xy-4)+3(x²y-xy+2)
-(x²y+3xy-4)+3(x²y-xy+2)
=(-x²y+3x²y)+(-3xy-3xy)+(4+6)
=2x²y-6xy+10