Rozwiązane

2. oblicz:
a) (1 i 2/3)³=
b) (2 i 1/5)²=
c) (-1 i 3/4)² =
d) (-2 i 1/2)³ =​



Odpowiedź :

Odpowiedź:

(1 i 2/3)³ = 5/3 * 5/3 * 5/3 = 125/27 = 4 i 17/27

(2 i 1/5)² = 11/5 * 11/5 = 121/25 = 4 i 21/25

(-1 i 3/4)² = (-7/4) * (-7/4) = 49/16 = 3 i 1/16

(-2 i 1/2)³ = (-5/2) * (-5/2) * (-5/2) = -125/8 = -15 i 5/8

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