Question 64122
{{{-6sqrt(2)*(5sqrt(2)-5sqrt(10))}}}
Multiply front term by each term in the brackets
{{{-6sqrt(2)*5sqrt(2)-(-6sqrt(2))*5sqrt(10)}}}
Multiply whole numbers then multiply the radicals
{{{-30sqrt(4)-(-30sqrt(20))}}}
{{{-30*2-(-30sqrt(4)*sqrt(5))}}}
{{{-60-(-30*2*sqrt(5))}}}
{{{-60-(-60*sqrt(5))}}}
Take away a negative is the same as adding a positive.
{{{-60+60*sqrt(5)}}}