Question

Stiind ca daca numerele sunt prime intre ele atunci c.m.m.d.c.=1,calculaţi: a) [2,9]; b) [18,25]; c) [2,3,5]; d) [9,4,5].

Answer 1

a) 2=2¹

9=3² -> cmmmc=2¹×3²÷18

b) 18=9×2=3²×2¹

25=5² -> cmmmc=5²×3²×2¹=150

c) 2=2¹

3=3¹

5=5¹ -> cmmmc=2¹×3¹×5¹=30

d) 9=3²

4=2²

5=5¹ -> cmmmc=3²×2²×5¹=60