Question

1.tìm UC(12,4)

2.tìm B(60,23)

Answer 1

1.Ta có:

12=2^2.3

4=2^2

ƯCLN(12,4)=2^2=4

ƯC(12,4)=1,2,4

2.Ta có:

   60=2^2.3.5

   23=1.23

BCNN(60,23)=2^2.3.5.1=60

B(60,23)=1,2,5,10,6,12,15,4,60

 

Answer 2

khong biet lam bai nay