Cho a, b, c là các số thực dương. CMR: $a^{3}+b^{3}+c^{3}+3abc\geqslant \sum bc\sqrt{2(b^{2}+c^{2})}$
CMR: $a^{3}+b^{3}+c^{3}+3abc\geqslant \sum bc\sqrt{2(b^{2}+c^{2})}$
Started By buitudong1998, 06-01-2014 - 19:01
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Posted 06-01-2014 - 19:01
buitudong1998
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