计算：(a/(a-b)=a^2/a^2-2ab+b^2)÷(a/(a+b)-a^2/a^2-b^2)1.[a/(a-b)=a^2/(a^2-2ab+b^2)]÷[a/(a+b)-a^2/(a^2-b^2)]2.(a-1)[1-(a+1)÷(a-1/a)]3.(-a^2b^3)^3/(ab)^8+b/a^2

来源：学生作业帮助网编辑：作业帮时间：2024/11/05 20:35:49

计算：(a/(a-b)=a^2/a^2-2ab+b^2)÷(a/(a+b)-a^2/a^2-b^2)1.[a/(a-b)=a^2/(a^2-2ab+b^2)]÷[a/(a+b)-a^2/(a^2-b^2)]2.(a-1)[1-(a+1)÷(a-1/a)]3.(-a^2b^3)^3/(ab)^8+b/a^2
计算：(a/(a-b)=a^2/a^2-2ab+b^2)÷(a/(a+b)-a^2/a^2-b^2)
1.[a/(a-b)=a^2/(a^2-2ab+b^2)]÷[a/(a+b)-a^2/(a^2-b^2)]
2.(a-1)[1-(a+1)÷(a-1/a)]
3.(-a^2b^3)^3/(ab)^8+b/a^2

计算：(a/(a-b)=a^2/a^2-2ab+b^2)÷(a/(a+b)-a^2/a^2-b^2)1.[a/(a-b)=a^2/(a^2-2ab+b^2)]÷[a/(a+b)-a^2/(a^2-b^2)]2.(a-1)[1-(a+1)÷(a-1/a)]3.(-a^2b^3)^3/(ab)^8+b/a^2
1.(a+b)/(a-b)
2.(a-1)[1-(a+1)÷(a-1/a)]=(a-1)(1-a/(a-1))=-1
3.(-a^2b^3)^3/(ab)^8+b/a^2=-b/a^2+b/a^2=0

第一题=是什么意思？
2 .(a-1)[1-(a+1)÷(a-1/a)]=(a-1)[1-a(a+1)/(a²-1)]=(a-1)[1-a/(a-1)]=(a-1)[-1/(a-1)]=-1
3 .(-a^2b^3)^3/(ab)^8+b/a^2=-b/a²+b/a²=0

CNM

1 (a+b)/(a-b)
2 -1
3 0

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