Question 1012590
{{{3^(sqrt(21x))=12^sqrt(21)}}}
So then take the log base 3 of both sides.
{{{sqrt(21x)=log(3,(12^sqrt(21)))}}}
Square both sides,
{{{21x=(log(3,(12^sqrt(21))))^2}}}
Divide by 21,
{{{x=(log(3,(12^sqrt(21))))^2/21}}} or
{{{x=(log((12^sqrt(21))))^2/(21*(log((3)))^2)}}} or approximately
{{{x=5.116}}}