Question 173496
{{{sqrt(7)(3sqrt(7) + sqrt(2))}}}
Distributing the sqrt(7) to each term inside the parenthesis:
{{{3sqrt(7)sqrt(7) + sqrt(7)sqrt(2))}}}
{{{3sqrt(7*7) + sqrt(7*2))}}}
{{{3(7) + sqrt(14))}}}
{{{21 + sqrt(14))}}}