Question

The product of complex numbers (4,3) and (5,-6) is ?
A. (18,3)
B. (18,-3)
C. (38,9)
D. (38,-9)

Answer 1

Answer:

The answer of this is (38,9)

Answer 2

Answer:

The two complex numbers are

(4,3) and (5,-6)

Step-by-step explanation:

(4, 3) = 4 + 3i

(5, -6) = 5 - 6i

So, (4, 3) × (5, -6)

= (4 + 3i) × (5 - 6i)

= 20 - 24i + 15i - 18i²

= 20 - 9i + 18, where i² = - 1

= 38 - 9i

= (38, -9)

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