5sao nha bn iu bn nhìu
1)a)Ta có:1540 =2^2.5.7.11
910=2.5.7.13
=>ƯCLN(1540;910)=2.5.7=70
b)Ta có:3537=3^3.131
26=3^3
=>ƯCLN(3537;27)=3^3
c)Ta có :142=2.71
355=5.71
=>ƯCLN(142;355)=71
2)a)Ta có 72=2^3.3^2
24=2^3.3
=>BCNN(72;24)=2^3.3^2=72
b)Ta có :35=5.7
55=5.11
15=3.5
75=2.5^2
=>BCNN(35; 55 ;15 ;75)=2.3.5^2.7.11=11550
c)Ta có :12=2^2.3
28=2^2.7
60=2^2.3.5
=>BCNN(12; 28 ;60 )=2^2.3.5.7=420
d)Ta có 2=2
4=2^2
8=2^3
1024=2^10
=>BCNN(2; 4; 8 ;1024)=2.2^2.2^3.2^10=65536
Tick hook mk nha thanks
