写给女人书:2x/(x+2)-3/x
来源:百度文库 编辑:高校问答 时间:2024/05/07 16:17:20
(分式计算,要有过程)谢啦!!!
原式=2x方/(x方+2x)-3(x+2)/(x方+2x)
=(2x方-3x-6)/(x方+2x)
=2x2/(x+2)x-3x+6/(x+2)x
=2x平方-3x+6/(x+2)x
2x/(x+2)-3/x
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