Question 502787
How Do You Simplify The Square Root Of 3 Times The Square Root Of 28 ?
{{{sqrt(3) * sqrt(28)}}}
Same as 
{{{sqrt(3*28)}}} = {{{sqrt(84)}}}
Factor 84 to reveal the perfect square
{{{sqrt(4*21)}}}
extract the square root of 4
{{{2*sqrt(21)}}}