Cho: $a+b$ = $c+d$
CMR: $c^{2}+d^{2} +cd\geq 3ab$
Thanks.
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#290434 Cho: $a+b$ = $c+d$ CMR: $c^{2}+d^{2} +cd\geq 3a...
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on 27-12-2011 - 11:10
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