若x²-y²-x+y=(x-y)*A,则A=__________.若x²-y²-x+y=(x-y)*A,则A=__________.
来源:学生作业学帮网 编辑:学帮网 时间:2024/05/27 04:15:06
若x²-y²-x+y=(x-y)*A,则A=__________.
若x²-y²-x+y=(x-y)*A,则A=__________.
答:
x^2-y^2-x+y
=(x-y)(x+y)-(x-y)
=(x-y)(x+y-1)
=(x-y)*A
所以:A=x+y-1
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来源:学生作业学帮网 编辑:学帮网 时间:2024/05/27 04:15:06
若x²-y²-x+y=(x-y)*A,则A=__________.
若x²-y²-x+y=(x-y)*A,则A=__________.
答:
x^2-y^2-x+y
=(x-y)(x+y)-(x-y)
=(x-y)(x+y-1)
=(x-y)*A
所以:A=x+y-1