设m=ab/(a^2-ab),则m^2/(am-b)-m/a可化简为

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设m=ab/(a^2-ab),则m^2/(am-b)-m/a可化简为设m=ab/(a^2-ab),则m^2/(am-b)-m/a可化简为设m=ab/(a^2-ab),则m^2/(am-b)-m/a可化

设m=ab/(a^2-ab),则m^2/(am-b)-m/a可化简为
设m=ab/(a^2-ab),则m^2/(am-b)-m/a可化简为

设m=ab/(a^2-ab),则m^2/(am-b)-m/a可化简为
m=ab/(a^2-ab)
m=ab/[a(a-b)]
m=b/(a-b)
m^2/(am-b)-m/a
=b^2/[(a-b)^2(ab/(a-b)-b)]-b/a(a-b)
=b^2/(b^2(a-b))-b/a(a-b)
=1/(a-b)-b/a(a-b)
=1/a

m^2/(am-b)-m/a=
am^2/a(am-b)-m(am-b)/a(am-b)=
bm/a(am-b)=
将m=ab/(a^2-ab)代入上式 化简
bm/a(am-b)=1/a

1/a