Rewrite 6 �ã49/18 with a rational denominator.

Does this mean 6 sqrt (49/18) ????

Or sixth root of (49/18)
or what?
If the first then start by taking 7 and 3 squared out (49 and 9 that is)
6 (7/3) sqrt (1/2)
=14 sqrt(1) /sqrt(2)
multiply top and bottom by sqrt (2) to rationalize denominator
14 sqrt(2) / 2
= 7 sqrt (2)