Answer: y√3
Step-by-step explanation:
Factor the inside and look for pairs. "Two on the inside makes one on the outside" when you are simplifying square roots.
[tex]\sqrt{3y^2}\\\\\\=\sqrt{3\cdot y\cdot y}\\\\\\=\sqrt{3\cdot \underline{y}\cdot \underline{y}}\\\\\\=y\sqrt3[/tex]
