Answer:
2x.
Step-by-step explanation:
x^2/3 (8x)^1/3
= x^2/3 * 8^1/3 * x ^ 1/3
= 2 x^2/3 * x ^ 1/3
= 2 x^(1/3 + 2/3)
= 2x^1
= 2x