( 40% – 1 và 2/3 ) : -3/2 + ( -1/2 ) mũ hai

2 bình luận về “( 40% – 1 và 2/3 ) : -3/2 + ( -1/2 ) mũ hai”

1. ( 40% – 1 2/3 ) : {-3}/2 + ( {-1}/2 )^2

   = ( 2/5 – 5/3 ) . {-2}/3 + ( 1/4 )

   = ( 6/15 – 25/15 ) . {-2}/3 + 1/4

   = {-19}/15 . {-2}/3 + 1/4

   = 38/45 + 1/4

   = 152/180 + 45/180

   = 197/180

   Trả lời
2. #Chanhh

   ( 40% – 1 2/3 ) : (-3/2) + (-1/2)^2

   = ( 0,4 – 5/3 ) . (-2/3) + 1/4

   = ( 4/10 – 5/3 ) (-2/3) + 1/4

   = ( 2/5 – 5/3 ) ( -2/3 ) + 1/4

   = ( 6/15 – 25/15 ) ( – 2/3 ) + 1/4

   = (-19/15) (-2/3) + 1/4

   = -38/45 + 1/4

   =  -152/180 + 45/180

   = -107/180

   Trả lời