①根号5+2倍根号2-（根号陵陆5-根号2）=3倍根号2②仔镇|1-根号2|+|1+根号2|=2倍根号2③|根号3-根号5|+3(根号3-根号5）=2根念汪粗号3④3（根号2+根号3）+3（根号2-2倍根号3）=6倍根号2-3倍根号3
