Question 363548
Use the FOIL Method,
{{{(5*sqrt(2)+2)(5+sqrt(10))=5*5+5*sqrt(10)+2*5+2*sqrt(10)}}}
{{{(5*sqrt(2)+2)(5+sqrt(10))=25+10+7*sqrt(10)}}}
{{{highlight((5*sqrt(2)+2)(5+sqrt(10))=35+7*sqrt(10))}}}