Question 77275
{{{(sqrt(12)sqrt(15))}}}
{{{(sqrt(3*4)sqrt(5*3))}}} [factor the radicands and try to find perfect squares to eliminate]
.
{{{(2sqrt(3)sqrt(5*3))}}}
{{{(2sqrt(3*3*5)))}}} [multiply the radicands]
{{{(2*3sqrt(5)))}}}
{{{(6sqrt(5)))}}}