CHo a,b,c > 0 . Chứng minh:
$(a^2+b^2)(b^2+c^2)(c^2+a^2)(ab+bc+ca)^2\geq 8a^2b^2c^2(a^2+b^2+c^2)^2$
Edited by Sagittarius912, 10-04-2013 - 19:49.
$(a^2+b^2)(b^2+c^2)(c^2+a^2)(ab+bc+ca)^2\geqslant 8a^2b^2c^2(a^2+b^2+c^2)^2$
Started By IloveMaths, 10-04-2013 - 17:13
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Posted 10-04-2013 - 17:13
IloveMaths
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