T
thuyluvkem


cho 3 số dương a, b, c > 0 ab+bc+ca=3
Tìm min [TEX]P= \frac{a^3}{a + 2b} + \frac{b^3}{b + 2c} + \frac{c^3}{c + 2a}[/TEX]
Tìm min [TEX]P= \frac{a^3}{a + 2b} + \frac{b^3}{b + 2c} + \frac{c^3}{c + 2a}[/TEX]