Answer:
9 √ 2
Step-by-step explanation:
1. Rewrite 162 as [tex]9^{2}[/tex] ⋅2
2. factor 81 out of 162
[tex]\sqrt{81 (2)}[/tex]
3. Rewrite 81 as [tex]9^{2}[/tex]
[tex]\sqrt{9^{2}.2 }[/tex]
4. Pull the terms from under the radical
[tex]\sqrt[9]{2}[/tex]
I hope this helps :)