18-03-2022
Mathematics

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What is the sum of 12-5i and 3 + 4i?
•-16 + 63
•9-i
•9-9i
•15-9i

What is the sum of 125i and 3 4i 16 63 9i 99i 159i class=

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18-03-2022

Answer: 2nd option: 9-i

Step-by-step explanation:

We can add the numbers and the terms with i separately.

12 - 5i - 3 + 4i = (12 - 3) + (-5i + 4i)

= 9 + (-i)

*Adding a negative is essentially subtracting a positive*

= 9-i

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