btjefferson2 btjefferson2

21-02-2020
Mathematics

contestada

Multiply each complex number by its conjugate.
6i

Respuesta :

amna04352 amna04352

21-02-2020

Answer:

36

Step-by-step explanation:

for a complex no. a+bi, the conjugate is a-bi

6i is 0+6i,

It's conjugate is 0-6i, or just -6i

(6i) × (-6i)

-36i²

since i² = -1,

-36i² = -36(-1) = +36

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