(4倍根号6+4倍根号二+6倍根号二)/2倍根号2
=(4倍根号6+10倍根号二)/2倍根号2
=(2倍根号6+5倍根号二)/ 2倍根号2
=(2倍根号6)/2倍根号2+(5倍根号二)/ 2倍根号2
=根号3+2分之5