Answer: [tex]5\sqrt{27}[/tex]
Step-by-step explanation: Use the property that [tex]\sqrt{x} +\sqrt{x} =2\sqrt{x}[/tex] (when x > 0). In this case x = 27, so you can combine terms with the same radical:
[tex]2\sqrt{27}+3\sqrt{27}=(2+3)\sqrt{27}=5\sqrt{27}[/tex]
