Given z1 = 3 + 4i and z2 = 1 - 2i, what is the complex number z1 - z2?

2 + 6i

2 + 2i

5 + 2i

4 + 2i

Answer and Solution

B. 2 + 2i

z1 - z2 = (3 - 1) + (4 + 2)i = 2 + 6i.

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