15.2.6 = (5.3).2.6
5.3.12 = 5.3.(2.6)
15.3.4 = (5.3).(2.6)
Suy ra 15.2.6 = 5.3.12 = 15.3.4
4.4.9 = 4.(2.2).9
8.18 = (4.2).(2.9)
8.2.9 = (4.2).2.9
Suy ra 4.4.9 = 8.18 = 8.2.9
15.2.6 = 5.3.12 = 15.3.4
4.4.9 = 8.18 = 8.2.9
Đúng thì k nha
Phân tích thành thừa số ra là được:
15.2.6 = 3.5.2.2.6= 2^2.3^2.5
4.4.9 = 2.2.2.2.3.3 = 2^4.3^2
5.3.12 = 5.3.3.2.2 = 2^2.3^2.5
8.18 = 2.2..2.2.3.3 = 2^4.3^2
15.3.4 = 3.5.3.2.2 = 2^2.3^2.5
8.2.9 = 2.2.2.2.3.3= 2^4.3^2
Vậy, 15.2.6 = 5.3.12 = 15.3.4 ; 4.4.9 = 8.18 = 8.2.9