Question

Giúp emmmmmm

Answer 1

Ta có:

\(x+y=\dfrac{x}{2}+\dfrac{x}{2}+\dfrac{y}{3}+\dfrac{y}{3}+\dfrac{y}{3}\ge5\sqrt[5]{\dfrac{x^2y^3}{2^2.3^3}}=5\sqrt[5]{\dfrac{108}{108}}=5\) (đpcm)

Dấu "=" xảy ra khi \(x=2;y=3\)