Question

Tìm ƯCLN {24,36} BCNN {30,40}

Answer 1

\(24=2.2.3.2\)

\(36=2.2.3.3\)

\(\RightarrowƯCLL\left(24;36\right)=2^2.3=12\)

\(30=3.2.5\)

\(40=2.2.2.5\)

\(\Rightarrow BCNN\left(30;40\right)=2^3.3.5=120\)

Answer 2

sai UWCLN Phải =2³.3^{2=72 mới đúng} 

Answer 3

24=2³.3

36=2².3²

ƯCLN(24;36)=2².3=12

30=2.3.5

40=2³.5

BCNN(30;40)=2³.3.5=120