K
khoi727525


xin nho cac anh chi giai bai toan nay giup em.xin cam on!
cho a+b+c=2012 , va 1/(a+b)+1/(b+c)+1/(c+a)=1006
tinh E= a/(b+c)+b/(c+a)+c/(a+b) = ?
(dia chi mail cua em nguyenchi2468@gmail.com) ,xin cam on!
cho a+b+c=2012 , va 1/(a+b)+1/(b+c)+1/(c+a)=1006
tinh E= a/(b+c)+b/(c+a)+c/(a+b) = ?
(dia chi mail cua em nguyenchi2468@gmail.com) ,xin cam on!
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