Question 1089767


{{{sqrt(9x^2)/sqrt(18y^2)}}}


={{{sqrt((3x)^2)/sqrt(2*9y^2)}}}


={{{sqrt((3x)^2)/sqrt(2*(3y)^2)}}}


={{{cross(3)x/(cross(3)y*sqrt(2))}}}


={{{x/(y*sqrt(2))}}} or {{{(x*sqrt(2))/2y}}}