Which of the following is a complex number?

-3

4 + 5i

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Q1.

Which of the following represents the real part of a complex number z = 4 + 3i?

Q2.

What is the additive inverse of the complex number z = 5 - 7i?

Q3.

What is the result of (2 + 3i) + (4 - 5i)?

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