Question

Tìm ƯCLN , BCNN , ƯC , BC của các số sau

28 ; 70 ; 56

36 , 48 , 56

Answer 1

ERROR 404

Answer 2

ai giúp em với ạ

Answer 3

28=2²x7

70=2x5x7

56=2³x7

ƯCLN=2x7=14

ƯC={1;2;7;14}

BCNN=2³x7=56

BC={0;56;112;168;...}

36=2²x3²

48=2⁴x3

56=2³x7

ƯCLN=2²=4

ƯC={1;2;4}

BCNN=2⁴=16

BC={0;16;32;48;...}

Chúc bạn học tốt nha! 

Answer 4

Thanks bn nha~

Answer 5

+)Ta có:28=2^2.7

             70=2.5.7

             56=2^3.7

ƯCLN(28;70;56)=2^2.7=28

ƯC(28;70;56)=U(28)=28;14;7;4;2;14;...

BCNN(28;70;56)=2^3.5.7=280

BC(28;70;56)=B(280)=280;560;840;...

+)Ta có:36=2^2.3^2

             48=2^4.3

             56=2^3.7

ƯCLN(36;48;56)=2^2.3^2=36

ƯC(36;48;56)=Ư(36)=36;18;12;...

BCNN(36;48;56)=2^4.3^2.7=1008

BC(36;48;56)=B(1008)=1008;2016;3024;...