02-12-2020
Mathematics

contestada

What is (8 - i) + (5 + 7i)?
O (A) 3 - 8i
O (B) 8i - 3
O (C)-5i
O (D) 13 + 61

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02-12-2020

Answer:

13 + 6i

Step-by-step explanation:

expand the brackets (basically drop them), then rearrange the numbers (8 + 5 + 7i - i) then you will get your answer.

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Background information: In this photo from 1923, a man is using the backs of one million German marks (money) as writing paper. Photo Courtesy of German Federa