Question 313924
I can't really tell what if you mean 
{{{(sqrt(18))/sqrt(8) - sqrt(2) }}}    OR   {{{(sqrt(18))/((sqrt(8)-sqrt(2))) }}}


Since the first problem I've listed above, doesn't match your multiple choice answers, I'm assuming it's the second choice.


{{{(sqrt(9)*sqrt(2))/((sqrt(4)*sqrt(2)-sqrt(2))) }}}
{{{(3*sqrt(2))/((2*sqrt(2)-1*sqrt(2))) }}}
{{{3*sqrt(2)/(1*sqrt(2)) }}}


Divide out {{{sqrt(2)}}}
{{{3}}}  FINAL ANSWER!!


Dr. Robert J. Rapalje, Retired