Resposta:
·⠀⠀⠀⠀a + bi = 11/25 + 2i/25
Explicação passo-a-passo:
·
·⠀⠀⠀⠀(1 + 2i)/(3 + 4i)
·⠀⠀⠀⠀
·⠀⠀⠀⠀Conjugado de a + bi = a – bi
·⠀⠀⠀⠀= (1 + 2i)*(3 – 4i) / (3 + 4i)*(3 – 4i)
·⠀⠀⠀⠀= (3 – 4i + 6i – 8i²) / (3² – (4i)²)
·⠀⠀⠀⠀= (3 + 2i – 8i²) / (9 – 16i²)
·⠀⠀⠀⠀i² = – 1; i = √(– 1)
·⠀⠀⠀⠀= (3 + 2i – 8*(– 1)) / (9 – 16*(– 1))
·⠀⠀⠀⠀= (3 + 2i + 8)/(9 + 16)
·⠀⠀⠀⠀= (11 + 2i)/25
·⠀⠀⠀⠀= 11/25 + 2i/25
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Resposta:
·⠀⠀⠀⠀a + bi = 11/25 + 2i/25
Explicação passo-a-passo:
·
·⠀⠀⠀⠀(1 + 2i)/(3 + 4i)
·⠀⠀⠀⠀
·⠀⠀⠀⠀Conjugado de a + bi = a – bi
·⠀⠀⠀⠀
·⠀⠀⠀⠀= (1 + 2i)*(3 – 4i) / (3 + 4i)*(3 – 4i)
·⠀⠀⠀⠀= (3 – 4i + 6i – 8i²) / (3² – (4i)²)
·⠀⠀⠀⠀= (3 + 2i – 8i²) / (9 – 16i²)
·
·⠀⠀⠀⠀i² = – 1; i = √(– 1)
·
·⠀⠀⠀⠀= (3 + 2i – 8*(– 1)) / (9 – 16*(– 1))
·⠀⠀⠀⠀= (3 + 2i + 8)/(9 + 16)
·⠀⠀⠀⠀= (11 + 2i)/25
·⠀⠀⠀⠀= 11/25 + 2i/25
·