Answer:
[tex]x^{2/3}[/tex]
Step-by-step explanation:
(x^4/3 x^2/3) ^ 1/3
[tex]( x^{4/3} x^{2/3} )^(1/3)[/tex]
add the exponents inside the parentesis
[tex]( x^{(4+2)/3} )^(1/3)[/tex]
[tex]( x^{(6)/3} )^(1/3)[/tex]
[tex]( x^{2} )^(1/3)[/tex]
multiply the exponents
[tex]x^{2/3}[/tex]