Answer:
6
Step-by-step explanation:
(2)/((6)√(8))*√(2)-((18)/√81))-2)
(6)sqrt√8 = 6sqrt √2³= 2^3/6=2^1/2= √2
(2√2)/√2 -(-18/√9²)-2)
2-(-18/9 -2)
2-(-2-2)=2+4=6