SammieJoe SammieJoe
  • 09-07-2016
  • Mathematics
contestada

Find the product of the complex number and its conjugate.
1 + 2i

Respuesta :

jhonyy9
jhonyy9 jhonyy9
  • 09-07-2016
so the conjugate will be 1-2i 

(1+2i)(1-2i) = 1 -(2i)^2 = 1 - 4(-1) = 1+4 = 5 

hope this will help you 
Answer Link
konrad509
konrad509 konrad509
  • 10-07-2016
[tex]\overline{1+2i}=1-2i\\\\ (1+2i)(1-2i)=1+4=5[/tex]
Answer Link

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