x/2(x+1),1/x^2-x通分

来源:学生作业帮助网 编辑:六六作业网 时间:2024/05/29 12:43:22
x/2(x+1),1/x^2-x通分x/2(x+1),1/x^2-x通分x/2(x+1),1/x^2-x通分x/[2(x+1)]=x*x(x-1)/[2x(x+1)(x-1)]=x^2(x-1)/[2

x/2(x+1),1/x^2-x通分
x/2(x+1),1/x^2-x通分

x/2(x+1),1/x^2-x通分
x/[2(x+1)]=x*x(x-1)/[2x(x+1)(x-1)]=x^2(x-1)/[2x(x+1)(x-1)]
1/(x^2-x)=1/[x(x-1)]=2(x+1)/[2x(x+1)(x-1)]