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a) 40 và 24
Ta có: 40 = \(2^3\) . 5 ; 24= \(2^3\) . 3
=> ƯCLN(40; 24) = \(2^3\) = 8
=> ƯC(40; 24) ∈ Ư(8)
=> ƯC(40; 24) ∈ Ư(8) = { 1; 2; 4; 8 }
a: ƯCLN(40;24)=8
ƯC(40;24)={1;2;4;8}
b: ƯCLN(48;120)=24
ƯC(48;120)={1;2;3;4;6;8;12;24}
c: ƯCLN(36;990)=18
=>ƯC(36;990)={1;2;3;6;9;18}
d: ƯCLN(54;36)=18
=>ƯC(54;36)={1;2;3;6;9;18}
e: ƯCLN(10;20;70)=10
=>ƯC(10;20;70)={1;2;5;10}
f: ƯCLN(25;55;75)=5
ƯC(25;55;75)={1;5}
j: ƯCLN(9;18;72)=9
=>ƯC(9;18;72)={1;3;9}
\(a,ƯC\left(40,24\right)=Ư\left(8\right)=\left\{...\right\}\\ b,ƯC\left(12,52\right)=Ư\left(4\right)=\left\{...\right\}\\ c,ƯC\left(36,990\right)=Ư\left(18\right)=\left\{...\right\}\\ d,ƯC\left(54,36\right)=Ư\left(9\right)=\left\{...\right\}\\ e,ƯC\left(10,20,70\right)=Ư\left(10\right)=\left\{...\right\}\\ f,ƯC\left(25,55,75\right)=Ư\left(5\right)=\left\{...\right\}\\ g,ƯC\left(80,144\right)=Ư\left(16\right)=\left\{...\right\}\\ h,ƯC\left(63,2970\right)=Ư\left(9\right)=\left\{...\right\}\\ i,ƯC\left(65,125\right)=Ư\left(5\right)=\left\{...\right\}\\ j,ƯC\left(9,18,72\right)=Ư\left(9\right)=\left\{...\right\}\\ k,ƯC\left(24,36,60\right)=Ư\left(12\right)=\left\{...\right\}\\ l,ƯC\left(16,42,86\right)=Ư\left(2\right)=\left\{..\right\}\)
12=2^2x3
52=2^2x13
=>ƯCLN(12,52)=2^2=4
=>ƯC(12,52)=Ư(4)={1;2;4}hết
a: ƯCLN(40;24)=8
ƯC(40;24)=Ư(8)={1;2;4;8}
b: UCLN(80;144)=16
UCLN(80;144)={1;2;4;8;16}
c: UCLN(9;18;72)=9
ƯC(9;18;72)={1;3;9}
d: ƯCLN(25;55;75)=5
ƯC(25;55;75)={1;5}
\(a,40=2^3.5\\ 24=2^3.3\\ \Rightarrow UCLN_{\left(24;40\right)}=2^3=8\\ \RightarrowƯC_{\left(40;24\right)}=Ư_{\left(8\right)}=\left\{1;2;4;8\right\}\\ b,80=2^4.5\\ 144=2^4.3^2\\ \Rightarrow UCLN_{\left(80;144\right)}=2^4=16\\ \RightarrowƯC_{\left(80;144\right)}=Ư_{\left(16\right)}=\left\{1;2;4;8;16\right\}\\ c,9=3^2\\ 18=2.3^2\\ 72=3^2.2^3\\ \Rightarrow UCLN_{\left(8;18;72\right)}=3^2=9\\ \RightarrowƯC_{\left(9;18;72\right)}=Ư_{\left(9\right)}=\left\{1;3;9\right\}\\ d,25=5^2\\ 55=5.11\\ 75=5^2.3\\ \Rightarrow UCLN_{\left(25;55;75\right)}=5\\ \RightarrowƯC_{\left(25;55;75\right)}=Ư_{\left(5\right)}=\left\{1;5\right\}\)
