If x and y are positive real numbers and xy = 8, then the minimum value of 2x + y is

xy = 8 = 1 × 8 = 2 × 4

$=frac{1}{2} imes 16=frac{1}{3} imes 24$

∴ Minimum value of 2x + y = 2 × 2 + 4 = 8