I NEED HELP!!!! HOW DO YOU DUE THIS??? IT'S DUE NEXT PERIOD!!!!

Answer:
- [tex]\sqrt{6}[/tex]
Step-by-step explanation:
Simplifying radicals is similar to simplifying algebraic expressions
for example
3x - 4x = x(3 - 4) = - x ,
3[tex]\sqrt{6}[/tex] - 4[tex]\sqrt{6}[/tex]
= [tex]\sqrt{6}[/tex](3 - 4) = - [tex]\sqrt{6}[/tex]