28=22.7
20=22.5
40=23.5
=>BCNN(28,20,40)=23.5.7=280
=>BC(28,20,40)=B(280)={0;280;560;840;..}
HỌC TỐT NHÉ
28= 22.7
20=22.5
40=23.5
BCNN(28;20;40)=23.5.7=280
BC(28;20;40)=B(280)={280;560;840;...}
Học tốt nhé ~!!!!!!
\(28=2^2.7\)
\(20=2^2.5\)
\(40=2^3.5\)
BCNN ( 28,20,40 ) = \(2^3.5.7=280\)
=> BC ( 28,20,40 ) = B ( 280 ) = { 0 ; 280 ; 560 ; 840 ; ...}
28 = 2^2 . 7
20 = 2^2 . 5
40 = 2^3 . 5
BCNN ( 28 ; 20 ; 40 ) = 2^3 . 5 . 7 = 280 .
BC ( 28 ; 20 ; 40 ) = { 0 ; 280 ; 560 ; 840 ; 1120 ; .... }
Chúc bạn học giỏi nha !
BC ( 28, 20, 40 )
28 = 22 . 7
20 = 22 . 5
40 = 23 . 5
=> BCNN ( 28, 20, 40 ) = 23 . 5 . 7 = 280
Vậy : BCNN ( 28, 20, 40 ) = 280
~~~Leo~~~