L
linhlove313


Cho x,y, z > 0, Tìm min
[TEX]P = \sqrt[2]{\frac{x^3}{x^3 + 8y^3}} + \sqrt[2]{\frac{y^3}{y^3 + (x+y)^3}}[/TEX]
[TEX]P = \sqrt[2]{\frac{x^3}{x^3 + 8y^3}} + \sqrt[2]{\frac{y^3}{y^3 + (x+y)^3}}[/TEX]