L
lazy99


Cho a,b>0; a+b=2. Tìm GTNN của:
$2(a+b)^2 - 6(\dfrac{a}{b}+\dfrac{b}{a}) +9[\dfrac{1}{a^2}+ \dfrac{1}{b^2}]$
$2(a+b)^2 - 6(\dfrac{a}{b}+\dfrac{b}{a}) +9[\dfrac{1}{a^2}+ \dfrac{1}{b^2}]$
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