Question 754494

if you have {{{sqrt(x/7) * sqrt(7/9)}}} then

{{{sqrt(x/7) * sqrt(7/9)=sqrt((x/cross(7))(cross(7)/9))=sqrt(x/9)=sqrt(x)/sqrt(9)=sqrt(x)/3}}}

but, if you have {{{sqrt(x)/7 * sqrt(7)/9}}} then

{{{(sqrt(x)sqrt(7))/(7*9)}}}

{{{sqrt(7x)/63)}}}