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Aula: Multiplicação e Divisão de Números Complexos

Atividade • 8 Questões

Q1:

Expanda e simplifique ( 4 βˆ’ 𝑖 ) ( 3 + 2 𝑖 ) .

  • A 1 4 + 5 𝑖
  • B 1 2 βˆ’ 2 𝑖
  • C 1 0 + 5 𝑖
  • D 1 2 + 3 𝑖
  • E 1 2 + 7 𝑖

Q2:

Simplifique ( 7 + 6 𝑖 ) ( 2 βˆ’ 9 𝑖 ) .

  • A 6 8 βˆ’ 5 1 𝑖
  • B 6 8 + 5 1 𝑖
  • C βˆ’ 4 0 βˆ’ 5 1 𝑖
  • D βˆ’ 4 0 + 7 5 𝑖
  • E 6 8 + 7 5 𝑖

Q3:

Qual Γ© o valor de ( βˆ’ 9 + 5 𝑖 ) ( 3 βˆ’ 𝑖 ) ?

  • A βˆ’ 2 2 + 2 4 𝑖
  • B βˆ’ 2 7 βˆ’ 5 𝑖
  • C βˆ’ 3 2 + 2 4 𝑖
  • D 5 𝑖 + 2 4 𝑖 βˆ’ 2 7 
  • E βˆ’ 2 2 βˆ’ 2 4 𝑖

Q4:

Qual Γ© o valor de ( βˆ’ 1 βˆ’ 3 𝑖 ) ( βˆ’ 9 βˆ’ 5 𝑖 ) ?

  • A βˆ’ 6 + 3 2 𝑖
  • B 9 + 1 5 𝑖
  • C 2 4 + 3 2 𝑖
  • D βˆ’ 1 5 𝑖 + 3 2 𝑖 + 9 
  • E βˆ’ 6 βˆ’ 3 2 𝑖

Q5:

Qual Γ© o valor de ( 4 + 2 𝑖 ) ( 6 + 2 𝑖 ) ?

  • A 2 0 + 2 0 𝑖
  • B 2 4 + 4 𝑖
  • C 2 8 + 2 0 𝑖
  • D βˆ’ 4 𝑖 + 2 0 𝑖 + 2 4 
  • E 2 0 βˆ’ 2 0 𝑖

Q6:

Quanto Γ© βˆ’ 7 𝑖 ( βˆ’ 5 + 5 𝑖 ) ?

  • A 3 5 + 3 5 𝑖
  • B βˆ’ 3 5 βˆ’ 3 5 𝑖
  • C 3 5 βˆ’ 3 5 𝑖
  • D βˆ’ 3 5 + 3 5 𝑖

Q7:

Quanto Γ© βˆ’ 1 0 𝑖 ( βˆ’ 4 βˆ’ 6 𝑖 ) ?

  • A βˆ’ 6 0 + 4 0 𝑖
  • B 6 0 βˆ’ 4 0 𝑖
  • C βˆ’ 6 0 βˆ’ 4 0 𝑖
  • D 6 0 + 4 0 𝑖

Q8:

Multiplique ( βˆ’ 3 + 𝑖 ) por ( 2 + 5 𝑖 ) .

  • A βˆ’ 1 1 βˆ’ 1 3 𝑖
  • B βˆ’ 6 + 5 𝑖
  • C βˆ’ 1 βˆ’ 1 3 𝑖
  • D βˆ’ 6 βˆ’ 8 𝑖
  • E βˆ’ 6 βˆ’ 1 8 𝑖
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