一道数学题,现在就要,帮我——
(321/123+345/234+432/543)×(345/234+432/543+123/321)-(321/123+345/234+432/543+123/321)...
(321/123+345/234+432/543)×(345/234+432/543+123/321)-(321/123+345/234+432/543+123/321)×(345/234+432/543)
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原试=(321/123+345/234+432/543)*(345/234+432/543+123/321)-(321/123+345/234+432/543)*(345/234+432/543)+(123/321)*(345/234+432/543)=321/123+345/234+432/543)*(345/234+432/543+123/321)-(321/123+345/234+432/543)*(345/234+432/543)+(321/123+345/234+432/543)*123/321-(321/123+345/234+432/543)*123/321+(123/321)*(345/234+432/543)=-(321/123+345/234+432/543)*123/321+(123/321)*(345/234+432/543)=-(321/123)*(123/321)=-1
原试=(321/123+345/234+432/543)*(345/234+432/543+123/321)-(321/123+345/234+432/543)*(345/234+432/543)+(123/321)*(345/234+432/543)=321/123+345/234+432/543)*(345/234+432/543+123/321)-(321/123+345/234+432/543)*(345/234+432/543)+(321/123+345/234+432/543)*123/321-(321/123+345/234+432/543)*123/321+(123/321)*(345/234+432/543)=-(321/123+345/234+432/543)*123/321+(123/321)*(345/234+432/543)=-(321/123)*(123/321)=-1
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怎么又这么纠结的题目啊- =
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