September 23rd, 2018, 11:17 AM  #1 
Newbie Joined: Jun 2018 From: Brasil Posts: 20 Thanks: 0  polynomials
Check the alternative CORRETA that presents one of the zeros of the complex polynomial P (x) =  i · x³ + 2 · x²  2 + i? a) The complex number i. b) The whole number 1. c) The integer 1. d) The complex number 2 · i. Last edited by skipjack; September 23rd, 2018 at 04:45 PM. 
September 23rd, 2018, 12:50 PM  #2 
Global Moderator Joined: May 2007 Posts: 6,764 Thanks: 697 
Trivially b). Just plug them in.

September 23rd, 2018, 12:59 PM  #3 
Newbie Joined: Jun 2018 From: Brasil Posts: 20 Thanks: 0  
September 23rd, 2018, 04:45 PM  #4 
Global Moderator Joined: Dec 2006 Posts: 20,746 Thanks: 2133 
Yes.


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