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分式题,It's easy,please help me!

来源：学生作业帮 编辑：作业帮 分类：综合作业 时间：2024/07/13 20:55:05
分式题,It's easy,please help me!
3个数A,B,C,其积为负,其和为正,且X=A/｜A｜+｜B｜/B+C/｜A｜+｜AB｜/AB+｜AC｜/AC+｜BC｜/BC,则AX~3+BX~2+CX+2006=?
前面一道我做出了，换一道：设A，B为正整数，且2/3＜A/B＜5/7，当B为最小值时，求A+B的值．
大哥大姐们！
显然由题得A
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