(1+2/3-1/4) . (4/5 -3/4)mũ 2 (3 1/2 -0,5). 1/27 +1 1/3

2 bình luận về “(1+2/3-1/4) . (4/5 -3/4)mũ 2 (3 1/2 -0,5). 1/27 +1 1/3”

1. a)(1+2/3-1/4) . (4/5-3/4)^2

   =(12/12+8/12-3/12) . (1/20)^2

   =17/12 . 1/400=17/4800

   b)(3 1/2-0,5) . 1/27+1 1/3

   =(7/2-1/2) . 1/27+4/3

   =3 . 1/27+4/3 

   =1/9+4/3=1/9+12/9

   =13/9

    

   Trả lời
2. Giải đáp:

   (1+2/3-1/4) . (4/5 -3/4)^2

   = (12/12+8/12-3/12).(16/20-15/20)^2

   =17/12.(1/20)^2

   =17/12.1/400

   =17/4800

   (3 1/2 -0,5). 1/27 +1 1/3

   =(7/2-1/2).1/27+4/3

   =3/1.1/27+4/3

   =1/9+12/9

   =13/9

   @ngha

    

   Trả lời