约分x-(y-z)^2/(x+y)^2-z^2
来源:学生作业学帮网 编辑:学帮网 时间:2024/06/30 07:37:33
约分x-(y-z)^2/(x+y)^2-z^2
x-(y-z)^2/(x+y)^2-z^2=(x-y+z)(x+y-z)/(x+y-z)(x+y+z)=(x-y+z)/(x+y+z)
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来源:学生作业学帮网 编辑:学帮网 时间:2024/06/30 07:37:33
约分x-(y-z)^2/(x+y)^2-z^2
x-(y-z)^2/(x+y)^2-z^2=(x-y+z)(x+y-z)/(x+y-z)(x+y+z)=(x-y+z)/(x+y+z)