If Z1 = 2 - I and Z2 = 3 + I then the product of Z1 and Z2 is: (where Z2 and Z2 are complex numbers)?
- 7 - 2i
- 7 - I
- 7 - 3i
- None of these
Explanation
Given:
Z1 = 2 - i
Z2 = 3 + i
Product of Z1 and Z2:
Z1 * Z2 = (2 - i) * (3 + i)
= 6 + 2i - 3i - i²
Since i² = -1,
= 6 - i + 1
= 7 - i
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