第1个回答 2022-12-30
(1) (3.4.5). (6,8,10) 3n,4n,5n(næ I ##k) .
(2) (5,12.13) . ( 7.24.25) .( 9,40,41 )
2n + 1,2n~2 + Zn,2n2+ 2n + 1(n%E##)
(3)(8.15. 17).(12.35.37) 202*(n+ 1),[2(n+ 1)]~2- 1.[2(n+ .1)]~Z+ 1(n*E *#k)
(4)m2- n'2,2mn,m2 +n~2(m. nt9#E *#.m>n)i=9IB-ë:34 5
51213
7242594041
11 6061
13 84 85
151121138,15,1712.35,3720,21,2920,99,101
48,55,73
60,91,109.