CMR $\frac{xyz}{(1+3x)(x+8y)(y+9z)(z+6)}\leq \frac{1}{7^{4}}$Cho $x,y,z>0$ CMR$\frac{xyz}{(1+3x)(x+8y)(y+9z)(z+6)}\leq \frac{1}{7^{4}}$
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bđtcho $x,y,z>0$ CMR$\frac{xyz}{(1+3x)(x+8y)(y+9z)(z+6)}\leq \frac{1}{7^{4}}$
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CMR $\frac{xyz}{(1+3x)(x+8y)(y+9z)(z+6)}\leq \frac{1}{7^{4}}$Cho $x,y,z>0$ CMR$\frac{xyz}{(1+3x)(x+8y)(y+9z)(z+6)}\leq \frac{1}{7^{4}}$
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