举报
chris_zhuge
根号15 - 根号5 - 根号3 +3 (根号5+根号3)(根号3-1) 1 -------------------------------------=----------------------------------------=------------------------- 根号5 + 2乘以根号3 - 1 (根号5+根号3)+(根号3-1) 1 1 ---------+--------------- 根号3-1 根号5+根号3 1 2 2(根号5+1)根号5+1 =----------------------------=----------=----------------=-------------- 根号3+1 根号5-根号3 根号5-1 5-1 2 ----------+--------------- 2 2