Question

Tìm ƯC (12,18)/ ƯC (-15, 20) 

Mk  sẽ tích cho. 

Answer 1

ƯC(12, 18) {1, 3, 2, 6, -1, -2, -3, -6}

ƯC(-15, 20) {1,-1,5,-5}

chúc bạn học tốt nha

Answer 2

\(ƯC\left(12;18\right)=\left\{6\right\}\)

\(ƯC\left(-15;20\right)=\left\{5\right\}\)

Answer 3

1 ) Ư C ( 12,18 )

TA CÓ :

12 = 2² . 3

18 = 2 . 3²

=> ƯCLN ( 12,18 ) = 2 . 3 = 6

=> Ư C ( 12,18 ) = Ư ( 6 ) = { 1 ; 2 ; 3 ; 6 }

Vậy  Ư C ( 12,18 ) =  { 1 ; 2 ; 3 ; 6 }

Answer 4

\(ƯC\left(12;18\right)=\left(1;-1;2;-2;3;-3;6;-6\right)\)

\(ƯC\left(-15;20\right)=\left(1;-1;-5;5\right)\)

Answer 5

Mình nhầm ƯCLN

Xin lỗi \(Ư\left(12\right)=\left\{\pm1;\pm2;\pm3;\pm4;\pm6;\pm12\right\}\)

          \(Ư\left(18\right)=\left\{\pm1;\pm2;\pm3;\pm6;\pm9;\pm18\right\}\)

\(\RightarrowƯC\left(12;18\right)=\left\{\pm1;\pm2;\pm3;\pm6\right\}\)

Còn lại làm tương tự

\(ƯC\left(-15;20\right)=\left\{\pm1;\pm5\right\}\)