Question 533154
{{{sqrt(27x^3)/sqrt(3x)=sqrt((9x^2)(3x))/sqrt(3x)=(sqrt(9x^2)sqrt(3x))/ sqrt(3x)=((3x)sqrt(3x))/ sqrt(3x)=3x}}} with the restriction {{{x>0}}} because the original, complicated expression does not exist for zero or negative values of x.