Question

Ridicati la patrat numarul:
0,(4)
0,(7)
7,(3)
1,8(3)
0,2(6)

Answer 1

Răspuns:

Explicație pas cu pas:

0,(4)  = 4/9

0,(7)  = 7/9

7,(3)  = (73-7)/9 = 66/9 = 22/3

1,8(3)  = (183-18)/90 = 165/90 = 55/30 = 11/6

0,2(6) = (26-2)/90 = 24/90 = 8/30 = 4/15

[0,(4)]² = (4/9)² = 16/81 = 0,(197530864)

[0,(7)]² = (7/9)² = 49/81 = 0,(604938271)

[7,(3)]² = (22/3)² = 484/9 = 53,(7)

[1,8(3)]² = (11/6)² = 121/36 = 3,36(1)

[0,2(6)]² = (4/15)² = 16/225 = 0,07(1)