x²-2xy+y²-2x+2y+1
来源:学生作业帮助网 编辑:作业帮 时间:2024/05/06 00:15:03
x²-2xy+y²-2x+2y+1
x²-2xy+y²-2x+2y+1
x²-2xy+y²-2x+2y+1
x²-2xy+y²-2x+2y+1
=(x-y)²-2(x-y)+1
=(x-y-1)²
x²-2xy+y²-2x+2y+1
=(x-y)²-2(x-y)+1
=(x-y-1)²
你什么意思哦?
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来源:学生作业帮助网 编辑:作业帮 时间:2024/05/06 00:15:03
x²-2xy+y²-2x+2y+1
x²-2xy+y²-2x+2y+1
x²-2xy+y²-2x+2y+1
x²-2xy+y²-2x+2y+1
=(x-y)²-2(x-y)+1
=(x-y-1)²
x²-2xy+y²-2x+2y+1
=(x-y)²-2(x-y)+1
=(x-y-1)²
你什么意思哦?