Question 592155
3√45 + 6√125
{{{3sqrt(45) + 6sqrt(125)}}}
factor the numbers under the radical:
{{{3sqrt(3*3*5) + 6sqrt(5*5*5)}}}
{{{3sqrt(3^2*5) + 6sqrt(5^2*5)}}}
take out perfect squares:
{{{3*3sqrt(5) + 6*5sqrt(5)}}}
{{{9sqrt(5) + 30sqrt(5)}}}
{{{39sqrt(5)}}}