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a: 18=3^2*2; 42=2*3*7
=>ƯCLN(18;42)=3*2=6
b: 28=2^2*7
48=2^4*3
=>ƯCLN(28;48)=2^2=4
c: 24=2^3*3
36=2^2*3^2
60=2^2*3*5
=>ƯCLN(24;36;60)=12
d: 12=2^2*3
15=3*5
10=2*5
=>ƯCLN(12;15;10)=1
e: 24=2^3*3
16=2^4
8=2^3
=>ƯCLN(24;16;8)=2^3=8
h: 25=5^2; 55=5*11; 75=5^2*3
=>ƯCLN(25;55;75)=5
3:
a: \(40=2^3\cdot5;24=2^3\cdot3\)
=>\(ƯCLN\left(40;24\right)=2^3=8\)
=>\(ƯC\left(40;24\right)=Ư\left(8\right)=\left\{1;-1;2;-2;4;-4;8;-8\right\}\)
b: \(12=2^2\cdot3;52=2^2\cdot13\)
=>\(ƯCLN\left(12;52\right)=2^2=4\)
=>\(ƯC\left(12;52\right)=\left\{1;-1;2;-2;4;-4\right\}\)
c: \(36=2^2\cdot3^2;990=2\cdot3^2\cdot5\cdot11\)
=>\(ƯCLN\left(36;990\right)=3^2\cdot2=18\)
=>\(ƯC\left(36;990\right)=\left\{1;-1;2;-2;3;-3;6;-6;9;-9;18;-18\right\}\)
2:
a: \(12=2^2\cdot3;18=3^2\cdot2\)
=>\(ƯCLN\left(12;18\right)=2\cdot3=6\)
b: \(12=2^2\cdot3;10=2\cdot5\)
=>\(ƯCLN\left(12;10\right)=2\)
c: \(24=2^3\cdot3;48=2^4\cdot3\)
=>\(ƯCLN\left(24;48\right)=2^3\cdot3=24\)
d: \(300=2^2\cdot3\cdot5^2;280=2^3\cdot5\cdot7\)
=>\(ƯCLN\left(300;280\right)=2^2\cdot5=20\)
24 = 23.3; 36 = 24.34; 60 = 22.3.5
ƯCLN( 24; 36; 60) = 22.3 = 12
12 = 22.3; 15 = 3.5; 10 = 2.5
ƯCLN(12; 15; 10) = 1
24 = 23.3; 16 = 24; 8 = 23
ƯCLN(24; 16; 8) = 23
9 = 32; 81 = 34
ƯCLN( 9; 81) = 9
11 = 11; 15 = 3.5
ƯCLN( 11; 15) = 1
1 = 1; 10 = 2.5
ƯCLN(1; 10) = 1
150 = 2.3.52; 84 = 22.3.7
ƯCLN( 150; 84) = 6
1: UCLN(12;18)=6
BCNN(12;18)=36
2: UCLN(24;48)=24
BCNN(24;48)=48
nhiều thế b. b ko hiểu câu nào thì tụi m giải cho nghe
a:UCLN(12;18)=6
BCNN(12;18)=36
b: UCLN(24;36;60)=12
BCNN(24;36;60)=360
Dễ nhưng dài e nên tách ra
a) ƯCLN(12;18) = 6
b) ƯCLN(12;10)=2
c) ƯCLN(24;48)=24
d) ƯCLN(300;280)=20
e) ƯCLN(9;81)=9
f) ƯCLN(11;15)=1
g) ƯCLN(1;10)=1
h) ƯCLN(150;84)=6