[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
Here's the solution :
taking one out from each of them as square root :
square root of 3x × square root of 3x
= 2 square root of 3x