hailiemj03 hailiemj03
  • 21-08-2020
  • Mathematics
contestada

Multiply.
(3 – 4i)(–2 – 2i)
Enter your answer in the box.

Multiply 3 4i2 2i Enter your answer in the box class=

Respuesta :

09pqr4sT
09pqr4sT 09pqr4sT
  • 21-08-2020

Answer:

[tex]\Huge \boxed{-14 + 2i}[/tex]

Step-by-step explanation:

(3 – 4i)(–2 – 2i)

Expanding brackets.

3(-2 - 2i) - 4i(-2 - 2i)

-6 -6i + 8i + 8i²

Apply imaginary number rule : i² = -1

-6 - 6i + 8i + 8(-1)

-6 - 6i + 8i - 8

Combining like terms.

-6 - 8 - 6i + 8i

-14 + 2i

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