Răspuns:
4/9
Explicație pas cu pas:
(1/2 - 1/5) : (2/5 + 0,5) + [0,(3)]^2 =
(5/10 - 2/10):(2/5 + 5/10) + (3/9)^2 =
3/10 : (4/10 + 5/10) + (1/3)^2 =
3/10 : 9/10 + 1/9 =
3/10 × 10/9 + 1/9 =
3/9 + 1/9 =
4/9
( 1 / 2 - 1 / 5 ) : ( 2 / 5 + 0, 5 ) + [ 0, ( 3 ) ] ^ 2 =
( 5 / 10 - 2 / 10 ) : ( 2 / 5 + 1 / 2 ) + 0, ( 1 ) =
3 / 10 : ( 4 / 10 + 5 / 10 ) + 0, ( 1 ) =
3 / 10 : 9 / 10 + 0, ( 1 ) =
3 / 10 × 10 / 9 + 0, ( 1 ) =
30 / 90 + 0, ( 1 ) =
1 / 3 + 0, ( 1 ) =
0, ( 3 ) + 0, ( 1 ) = 0, ( 4 )