Question 146697
{{{sqrt(n^2+12n+36)}}} Start with the given expression



{{{sqrt((n+6)^2)}}} Factor {{{n^2+12n+36}}} to get {{{(n+6)^2}}}



{{{n+6}}} Take the square root of {{{(n+6)^2}}} to get {{{n+6}}}. Note: we're must assume that every variable is positive



{{{sqrt(n^2+12n+36)=n+6}}} where {{{n>0}}}