Cho a,b>0 thoả ${a^3} + 16{b^2} = {a^2} + 18{b^3}$.Tìm min $P = a + b + \frac{6}{{ab}}$
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Cho a,b>0 thoả ${a^3} + 16{b^2} = {a^2} + 18{b^3}$.Tìm min $P = a + b + \frac{6}{{ab}}$
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