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

6 - 2i

6 + 2i

6 + 8i

6 - 8i

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Q1.

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

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

Q3.

If z1 = 3 + 4i and z2 = 1 - 2i, what is z1 * z2?

Q4.

What is the modulus of the complex number z = 3 + 4i?