Need answer fast with all the steps included please

Answer:
[tex]\frac{2b\sqrt{a} }{3}[/tex]
Step-by-step explanation
=[tex]\frac{\sqrt{4ab^2}}{\sqrt{9}}[/tex]
=[tex]\sqrt{9}=3\\[/tex]
[tex]=\frac{\sqrt{4ab^2}}{3}[/tex]
[tex]=\frac{\sqrt{4}\sqrt{a}\sqrt{b^2}}{3}\\[/tex]
[tex]=\sqrt{4}=2[/tex]
[tex]=\frac{2\sqrt{a}\sqrt{b^2}}{3}[/tex]
[tex]=\frac{2b\sqrt{a}}{3}[/tex]