Mathhater6 Mathhater6

20-09-2020
Mathematics

contestada

Simplify the expression (10 + 3i)(10 − 3i).

I understand how to distribute and what not, i just don't know what to do with i.

I got to -9i^2+10

1st CORRECT answer gets brainiest .
i=i
i^2=-1
i^3=-i
i^4=1

Respuesta :

Аноним Аноним

20-09-2020

Answer:

Step-by-step explanation:

91 − 60 i

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IamtheMath IamtheMath

20-09-2020

Answer:

109

Step-by-step explanation:

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