[tex]5x^6y^2\sqrt{x}\sqrt{y}[/tex]
1) We can simplify this expression, this way:
[tex]\begin{gathered} x^3y\sqrt{25x^7y^3} \\ 5\sqrt{x^7}\sqrt{y^3} \\ x^3y\cdot \:5x^3\sqrt{x}y\sqrt{y} \\ 5x^6y^2\sqrt{x}\sqrt{y} \end{gathered}[/tex]
Note that we had to rewrite that expression so that we could cancel and write it outside of the radical as we can see.
Thus this the answer.
