Cho $ a,b,c>\frac{9}{4}$
Tìm min $Q=\sum \frac{a}{2\sqrt{b}-3}$
Edited by Nguyen Duc Nghia, 20-06-2012 - 22:29.
Nguyễn Đức Nghĩa tự hào là thành viên VMF
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$\Phi \frac{\because Nguyen Thai Ha\therefore }{14/07/97}\Phi$
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