... : íc chung lín nhÊt 1.¦íc chung lín nhÊt: VD: T×m ¦CLN(12,30) (1 2)={ 1,2,3,4,6,12 } (3 0)={ 1,2,3,5,6,10,15,30 } c(12,30)={ 1,2,3,6 } cln(12,30)=6 (6 )={ 1,2,3,6} TiÕt 32 ξ17 íc chung lín ... íc chung lín nhÊt 12=2 2 .3 30=2.3.5 ¦CLN(12,30) =2.3 = 6 ; T×m: • ¦CLN(12,30); TiÕt 32 §17 íc chung lín nhÊt ?2T×m: • ¦CLN(8,9) = 1; • ¦CLN(8,12,15) = 1; • ¦CLN(24,16,8) = 8; Tiết 32 Đ17 ước ... chung lín nhÊt NhËn xÐt: ( SGK) ¸p dông1: T×m: • ¦CLN(12,15); • ¦CLN(5,1); • ¦CLN(12,30,1) TiÕt 32 ξ17 íc chung lín nhÊt ¸p dông1: • ¦CLN(12,15) = 3; • ¦CLN(5,1) = 1; • ¦CLN(12,30,1) = 1; Chó ý:...