Question

Please help

•A
•B
•C
•D​

Answer 1

Answer: Choice D

(3+5i) - (2+i)

We can verify this by the following steps

(3+5i) - (2+i)

3+5i - 2 - i .... distribute the negative to all terms in the parenthesis

(3-2) + (5i-i)

1 + 4i

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Something like choice C is close, but not quite there

(3+5i) - (2+i)

(3+5i) - (2-i)

3+5i - 2+i

(3-2) + (5i+i)

1 + 6i

Choices A and B aren't a match as well for similar reasons, though they aren't as close as choice C is.

Answer 2

D

Explanation:

`(3 + 5i) - (2 + i) \\ 3 + 5i - 2 - i \\ (3 - 2) + (5 - 1)i \\ 1 + 4i`