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thanhgia9a108 hasn't added any friends yet.
01-05-2016 - 15:49
$\frac{a^{3}+b^{3}+c^{3}}{ ( a+b)( b+c)( c+a)}+\frac{15}{2}\frac{ab+bc+ca}{( a+b+c )^{2}}\geq \frac{23}{8}$
16-08-2014 - 22:34
Cho x,y,z,p,m,n>0
$m+n\leqslant p$
x+y+z=2a
a>0
Tìm MaxP=mxy+nyz+pzx
@MOD: Tiêu đề và bài viết phải gõ latex nhé bạn!