Question 98339
{{{( 3 + sqrt(-5))(7 - sqrt(-10))}}}
{{{( 3 + sqrt(5*i^2))(7 - sqrt(10*i^2))}}}
{{{( 3 + sqrt(5)*i) (7 - sqrt(10)*i)}}}
{{{( 21 - i*3*sqrt(10) + i*7*sqrt(5) - sqrt(50)*i^2)}}}
{{{( 21 - i*3*sqrt(10) + i*7*sqrt(5) + 5*sqrt(2))}}}
{{{( 21 + 5*sqrt(2) - i*3*sqrt(5*2) + i*7*sqrt(5))}}}
{{{( 21 + 5*sqrt(2) -i*3*sqrt(5)*sqrt(2) + i*7*sqrt(5))}}}

{{{( 21 + 5*sqrt(2) + i*sqrt(5)*(7 - 3*sqrt(2)))}}}