sixhundredizzy sixhundredizzy

29-04-2021
Mathematics

contestada

(3-9i)(3+9i) =
(Simplify your answer. Type your answer in the form a +bi.)

Respuesta :

LittleAngel36 LittleAngel36

29-04-2021

Answer:

[tex]90[/tex]

Step-by-step explanation:

Expand (3-9i)(3+9i) using the FOIL Method.

[tex]3 \times 3 + 3(9i) - 9i \times 3 - 9i(9i)[/tex]

Simplify and combine like terms.

[tex]90[/tex]

therefor, the answer is 90.

Answer Link

marthebikok marthebikok

29-04-2021

I think it’s 90
I hope it’s correct

Answer Link

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