propvphunter propvphunter

08-04-2019
Mathematics

contestada

Find the missing term.

If y = 1 + i, then y^3 − 3y^2 + (?) − 1 = -i
What would the "?" equal to.

A) -3y
B) -3y + 1
C) 3y
D) 3i

Respuesta :

chikafujiwara chikafujiwara

08-04-2019

Answer:

C

Step-by-step explanation:

Simplify everything to get :

-3 - 4i + (?) = -i

From this we know that we need 3i + 3 to get -i.

3y = 3(1 + i)

3y = 3 + 3i

So the answer is C.

Answer Link

TheTvBird TheTvBird

08-04-2019

The Answer Would be:

C. 3y

Answer Link

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