Question 754661
how can i solve 2/ 6square root of 8?

I assume you mean 2 / (6*sqrt(8))

now sqrt(8) = sqrt(4*2) = 2*sqrt(2)     since 2^2 = 4
2 / (6*sqrt(8)) = 2 / (6*2*sqrt(2)) 
                = 2 / 12*sqrt(2)
                = 1/6*sqrt(2)