Răspuns:
4; 120
Explicație pas cu pas:
[tex]12 = {2}^{2} \times 3[/tex]
[tex]40 = {2}^{3} \times 5[/tex]
→
[tex](12,40) = {2}^{2} = 4[/tex]
[tex][12,40] = {2}^{3} \times 3 \times 5 = 120[/tex]
12 = 2² × 3
40 = 2³ × 5
_________________
(12, 40) = 2² = 4
____________________________________________________
[12,40]= 2³ × 3 × 5 = (8×5)×3 = 120
