Bài toán 1 : Viết các tập hợp sau.

a)Ư:(6,9,12)                     d) B(23) ; B(10) ; B(8)

b)Ư(7) ; Ư(18) ; Ư(10)                      e) B(3)  ;  B(12)  ; B(9)

c)Ư(15) ; Ư(16) ; Ư(250                   g) B(18) ; B(20) ; B(14)

\(a)\) 

\(Ư (6) = \) \(\left\{1;2;3;6\right\}\)

\(Ư\left(9\right)=\left\{1;3;9\right\}\)

\(Ư\left(12\right)=\left\{1;2;3;4;6;12\right\}\)

\(b)\)

\(Ư\left(7\right)=\left\{1;7\right\}\)

\(Ư\left(18\right)=\left\{1;2;3;6;9;18\right\}\)

\(Ư\left(10\right)=\left\{1;2;5;10\right\}\)

\(c)\)

\(Ư\left(15\right)=\left\{1;3;5;15\right\}\)

\(Ư\left(16\right)=\left\{1;2;4;8;16\right\}\)

\(Ư\left(250\right)=\left\{1;2;5;10;25;50;125;250\right\}\)

\(d)\)

\(B\left(23\right)=\left\{0;23;46;69;...\right\}\)

\(B\left(10\right)=\left\{0;10;20;30;...\right\}\)

\(B\left(8\right)=\left\{0;8;16;24;...\right\}\)

\(e)\)

\(B\left(3\right)=\left\{0;3;6;9;...\right\}\)

\(B\left(12\right)=\left\{0;12;24;36;...\right\}\)

\(B\left(9\right)=\left\{0;9;18;27;...\right\}\)

\(g)\)

\(B\left(18\right)=\left\{0;18;36;54;...\right\}\)

\(B\left(20\right)=\left\{0;20;40;60;...\right\}\)

\(B\left(14\right)=\left\{0;14;28;42;...\right\}\)

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: \(27=3^3\)

=>\(Ư\left(27\right)=\left\{1;-1;3;-3;9;-9;27;-27\right\}\)

Ư(18) = 1, 2, 3, 6, 9, 18 

Ư(45) = 1, 3, 5, 9, 15, 45

Ư(28) = 1, 2, 4, 7, 14, 28

Ư(40) = 1, 2, 4, 5, 8, 10, 20, 40

Ư(18)=2x3²

Ư(45)=3²x5

Ư(28)=2²x7

Ư(40)=2³x5

Ư(18)={1;2;3;9}

Ư(45)=1;5;9;3;}

Ư(28)={1;2;4;7}

Ư(40)=1;2;8;5;

mk nhanh nhất nhé

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}

;((

\(Ư\left(144\right)=\left\{1,2,3,4,6,8,9,12,16,18,24,36,48,72,144\right\}\)

\(Ư\left(324\right)=\left\{1,2,3,4,6,9,12,18,27,36,54,81,108,162,324\right\}\)

\(Ư\left(576\right)=\left\{1,2,3,4,6,8,9,12,16,18,24,32,36,48,64,72,96,144,192,288,576\right\}\)

\(Ư\left(1024\right)=\left\{1,2,4,8,16,32,64,128,256,512,1024\right\}\)

\(Ư\left(1296\right)=\left\{1,2,3,4,6,8,9,12,16,24,27,36,48,54,72,81,108,144,162,216,324,432,648,1296\right\}\)

\(Ư\left(2304\right)=\left\{1,2,3,4,6,8,9,12,16,18,24,32,48,64,72,96,128,144,192,256,288,384,576,768,1152,2304\right\}\)

\(Ư\left(2500\right)=\left\{1,2,4,5,10,20,25,50,100,125,250,500,625,1250,2500\right\}\)

\(Ư\left(10000\right)=\left\{1,2,4,5,8,10,16,20,25,40,80,100,125,200,250,400,500,625,1000,1250,2000,2500,5000,10000\right\}\)

B(18) = {0; 18; 36; 54; 72;...}

Ư(56) = {1; 2; 4; 7; 8; 14; 28; 56}

Ư(36) = {1; 2; 3; 4; 6; 9; 12; 18; 36}

Ư(18)={1;2;3;6;9;18}

Ư(20)={1;2;4;5;10;20}

B(4)={0;4;8;12;16;20;....}

B(2)={0;2;4;6;8;10;12;...}

Ư ( 18) = { 1,2,3,6,9,18}

TICK MÌNH NHA!