计算:(x-y+4xy/x-y)(x+y-4xy/x+y)
来源:学生作业帮助网 编辑:作业帮 时间:2024/05/31 05:04:32
计算:(x-y+4xy/x-y)(x+y-4xy/x+y)
:原式=[(x^2-2XY+Y^2+4xy)/x-y][(x^2+2XY+y^2-4xy)/x+y]
=[(x+y)^2/(x-y)][(x-y)^2/(x+y)]
=X^2-Y^2
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来源:学生作业帮助网 编辑:作业帮 时间:2024/05/31 05:04:32
计算:(x-y+4xy/x-y)(x+y-4xy/x+y)
:原式=[(x^2-2XY+Y^2+4xy)/x-y][(x^2+2XY+y^2-4xy)/x+y]
=[(x+y)^2/(x-y)][(x-y)^2/(x+y)]
=X^2-Y^2