Respuesta :

Hello!

[tex] \sqrt{ {9} {x}^{8} {y}^{2} } = 3{x}^{4}{y}[/tex]

Will be. :)

1/2 = Square root

Then.. :)

[tex] \sqrt{3 {x}^{4}y } = \sqrt{3y} {x}^{2} [/tex]

Or,

[tex]( {3y})^{ \frac{1}{2} } {x}^{2} [/tex]

So, Answer : D

Have a nice day!