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I want to know number one answer step by step

I want to know number one answer step by step-example-1

1 Answer

5 votes

Answer:


8+10i

Explanation:


i=√(-1)

therefore
i^2=(√(-1) )^2=-1


(5 + 7i) - (2 - 3i) + (6i^2+11)


=5 + 7i - 2 + 3i + 6(-1)+11


=8+10i

User Oliver Atkinson
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