3. Tìm ƯC(84, 192), ƯCLN(84, 192)
*ƯC(84, 192)
84 = 22 . 3 . 7
192 = 26 . 3
ƯCLN(84, 192) = 22 . 3 = 12
ƯC(84, 192) = Ư(12) = {1; 2; 3; 4; 6; 12}
*ƯCLN(84, 192) = 12
Ta có
84= 22.3.7
192= 26.3
ƯCLN(84;192)= 22.3= 12
ƯC(84;192)=ƯC(12)= {1;2;3;4;6;-1;-2;-3;-4;-6}