Question 49906
a.)
{{{4*sqrt(72) - 2*sqrt(48)}}}
{{{4*sqrt(2*6*6) - 2*sqrt(4*4*3)}}}
{{{24*sqrt(2) - 8*sqrt(3)}}} Only when you take the square root of the same numbers, you subtract or add them.
b.)
{{{sqrt(75) - sqrt(48)}}}
{{{sqrt(5*5*3) - sqrt(4*4*3)}}}
{{{5*sqrt(3) - 4*sqrt(3)}}}
{{{sqrt(3)}}}