[(2/a-2b)+(1/a-b)]*[(a-2b)/(3a^2-ab-4b^2)]4x-2/x^2-x-2+(1-1/x+1)/x/x-1
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/25 15:58:18
[(2/a-2b)+(1/a-b)]*[(a-2b)/(3a^2-ab-4b^2)]4x-2/x^2-x-2+(1-1/x+1)/x/x-1[(2/a-2b)+(1/a-b)]*[(a-2b)/(3a
[(2/a-2b)+(1/a-b)]*[(a-2b)/(3a^2-ab-4b^2)]4x-2/x^2-x-2+(1-1/x+1)/x/x-1
[(2/a-2b)+(1/a-b)]*[(a-2b)/(3a^2-ab-4b^2)]
4x-2/x^2-x-2+(1-1/x+1)/x/x-1
[(2/a-2b)+(1/a-b)]*[(a-2b)/(3a^2-ab-4b^2)]4x-2/x^2-x-2+(1-1/x+1)/x/x-1
通分,再乘,得1/(a^2-b^2)