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Ư(10) = { 1 ; 2 ; 5 ; 10 }
B(10) = { 0 ; 10 ; 20 ; 30 ....}
i: \(18=3^2\cdot2\)
=>\(Ư\left(18\right)=\left\{1;-1;2;-2;3;-3;6;-6;9;-9;18;-18\right\}\)
k: \(24=2^3\cdot3\)
=>\(Ư\left(-24\right)=Ư\left(24\right)=\left\{1;-1;2;-2;3;-3;4;-4;6;-6;8;-8;12;-12;24;-24\right\}\)
l: \(12=2^2\cdot3\)
=>\(Ư\left(12\right)=Ư\left(-12\right)=\left\{1;-1;2;-2;3;-3;4;-4;6;-6;12;-12\right\}\)
m: \(27=3^3\)
=>\(Ư\left(27\right)=\left\{1;-1;3;-3;9;-9;27;-27\right\}\)
a) Ư(12²) = Ư(144) = {1; 2; 3; 4; 6; 8; 9; 12; 16; 18; 24; 32; 48; 72; 144}
b) Ư(18²) = Ư(324) = {1; 2; 3; 4; 6; 9; 12; 18; 27; 36; 54; 81; 108; 162; 324}
c) Ư(24²) = Ư(576) = {1; 2; 3; 4; 6; 8; 9; 12; 16; 18; 24; 32; 36; 48; 64; 72; 96; 144; 192; 288; 576}
d) Ư(32²) = Ư(1024) = {1; 2; 4; 8; 16; 32; 64; 128; 256; 512; 1024}
\(Ư\left(144\right)=\left\{1,2,3,4,6,8,9,12,16,18,24,36,48,72,144\right\}\)
\(Ư\left(324\right)=\left\{1,2,3,4,6,9,12,18,27,36,54,81,108,162,324\right\}\)
\(Ư\left(576\right)=\left\{1,2,3,4,6,8,9,12,16,18,24,32,36,48,64,72,96,144,192,288,576\right\}\)
\(Ư\left(1024\right)=\left\{1,2,4,8,16,32,64,128,256,512,1024\right\}\)
\(Ư\left(1296\right)=\left\{1,2,3,4,6,8,9,12,16,24,27,36,48,54,72,81,108,144,162,216,324,432,648,1296\right\}\)
1)
\(Ư\left(6\right)=\left\{\pm1;\pm2;\pm3;\pm6\right\}\)
\(Ư\left(14\right)=\left\{\pm1;\pm2;\pm7;\pm14\right\}\)
\(Ư\left(17\right)=\left\{\pm1;\pm17\right\}\)
\(Ư\left(1\right)=\left\{\pm1\right\}\)
2)
a)
\(Ư\left(12\right)=\left\{\pm1;\pm2;\pm3;\pm4;\pm6;\pm12\right\}\)
b)
\(Ư\left(18\right)=\left\{\pm1;\pm2;\pm3;\pm6;\pm9;\pm18\right\}\)
c)
\(Ư\left(24\right)=\left\{\pm1;\pm2;\pm3;\pm4;\pm6;\pm8;\pm12;\pm24\right\}\)
\(\text{Ta có:}\)\(x>8\)\(\Rightarrow\)\(x\in\left\{12;24\right\}\)
a) Ư (12) = {1;2;3;4;6;12}
Ư (16) = {1;2;4;8;16}
Ư (24) = {1;2;3;4;6;8;12;24}
ƯC (12; 16; 24) = {1;2;4}
b) ƯC (5; 15; 35) = {1;5}
c) BC (8; 12; 24) = {0;24;48}
d) BC (5; 15; 35) = {0;105;210;…}
a) Ư(8) = {1;2;4;8}; Ư(12) = {1;2;3;4;6;12} => ƯC(8;12) = {1;2;4;}
b) Ư(24) = {1;2;3;4;6;8;12;24}; Ư(32) = {1;2;4;8;16;32} => ƯC(24; 32) = {1;2;4;8;}
c) Ư(7) = {1;7} ; Ư(10) = {1;2;5;10} => ƯC(7;10) = {1}
d) 8 = 23; 10 = 2.5 => BCNN (8;10) = 23.5 = 40 => BC(8;10) = B(40) = {0;40;80;...}
e) 25 = 52 => BCNN(2;3;25) = 2.3.52 = 150 => BC (2;3;25) = B(150) = {0;150; 300; ...}
2) N = {0;1;2;3;...}; N* = {1;2;3;....} => N giao N* = {1;2;3;...} = N*
a) Ư(8) = {1;2;4;8}; Ư(12) = {1;2;3;4;6;12} => ƯC(8;12) = {1;2;4;}
Vâu b,c,d,e tương tự nha bn
2) N = {0;1;2;3;...}; N* = {1;2;3;....} => N giao N* = {1;2;3;...} = N*
hok tốt
giúp mình với
Ư( 24)= { 1,2,3,4,6,8,12,24}
Ư(12)={1,2,3,4,6,12}