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What is the product of the complex numbers below? (4-21)(1+7) O A. 18-301 O B. -10-301 ОО O C. -10 + 261 O D. 18 + 261

What Is The Product Of The Complex Numbers Below 42117 O A 18301 O B 10301 ОО O C 10 261 O D 18 261 class=

Sagot :

Given the complex product:

(4 - 2i)(1 + 7i) =

• First we multiply each parenthesis:

4 + 28i - 2i - 14i²

• Using i² = -1

4 + 28i - 2i + 14 =

18 + 26i

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