1543699
1543699
19-05-2021
Mathematics
contestada
plz solve this question mhanifa
Respuesta :
mhanifa
mhanifa
19-05-2021
Answer:
(3 - 4i) / (3 + 4i) + (3 + 4i) / (3 - 4i) =
[(3 - 4i)² + (3 + 4i)²] / (3 + 4i)(3 - 4i) =
2(3² + 4²i²) / (3² - 4²i²) =
2(9 - 16) / (9 + 16) =
-14/25
Correct choice is C
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