化简 (3x/x-1 -x/x+1)÷x/x²-1
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/05 21:42:47
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化简 (3x/x-1 -x/x+1)÷x/x²-1
化简 (3x/x-1 -x/x+1)÷x/x²-1
化简 (3x/x-1 -x/x+1)÷x/x²-1
=【3x(x+1)-x(x-1)]/(x+1)(x-1) ×(x+1)(x-1)/x
=(3x²+3x-x²+x)/x
=4