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Rus_ich [418]
3 years ago
5

(7+3i)-(3-9i)complex numbers

Mathematics
1 answer:
DanielleElmas [232]3 years ago
4 0

Answer:

C

Step-by-step explanation:

For this, you want to treat i like any other variable, and combine like terms. However you need to keep in mind that there is a negative sign before the second set of parentheses. This means everything inside it should have a negative before it. So we can write it like this:

(7 + 3i) - (3 - 9i)

7 + 3i -3 +9i

4 + 12i

Hope that helps!

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