Answer:
[tex]\frac{4}{9x^2}[/tex]
Step-by-step explanation:
[tex](\frac{2x^3}{3x^4} )^2[/tex]
[tex]= (\frac{2}{3x} )^2[/tex]
[tex]= \frac{4}{9x^2}[/tex]
[tex]\left( \dfrac{2x^2}{3x^4} \right)^2 = \dfrac{4x^6}{9x^8} = \dfrac{4}{9x^2}[/tex]
