Odpowiedź:
A)
2 i 2/3 + 2 i 4/5 + 1/3 =
= 2 i 2/3 + 1/3 + 2 i 4/5 =
= 2 i 3/3 + 2 i 4/5=
= 3 + 2 i 4/5 =
= 5 i 4/5
B)
7/9 + 1 i 3/4 + 1/4 =
= 7/9 + 1 i 4/4 =
= 7/9 + 2=
= 2 i 7/9
C)
2 i 5/7 + 7 i 2/5 + 2 i 2/7 + 3 i 3/5 =
=2 i 5/7 + 2 i 2/7 + 7 i 2/5 + 3 i 3/5 =
= 4 i 7/7 + 10 i 5/5 =
= 5 + 11 =
= 16
D)
2 i 3/4 + 1 i 1/6 + 4 i 5/6 + 1 i 2/4 =
= 2 i 3/4 + 1 i 2/4 + 1 i 1/6 + 4 i 5/6 =
= 3 i 5/4 + 5 i 6/6 =
= 4 i 1/4 + 6=
= 10 i 1/4
Szczegółowe wyjaśnienie:
