emmy83 emmy83
  • 01-12-2017
  • Mathematics
contestada

Find a polynomial of degree 2 with real number coefficients and zero 3-2i

Respuesta :

Аноним Аноним
  • 01-12-2017
Complex roots occur as conjugates so the other root is 3 + 2i

so we have  the factored form 

(x - (3 - 2i)(x - (3 + 2i)

= (x - 3 + 2i)(x - 3 - 2i)

= x^2 -3x - 2ix - 3x + 9 + 6i + 2ix - 6i- 4i^2

=  x^2 -6x + 9 + 4

= x^2 - 6x + 13   Answer
Answer Link

Otras preguntas

Which of the following statements concerning the North Africa region is NOT true? Tourism is the main economic activity of Libya. North Africans are conflicted
what happens to the diaphragm when a person breath in or inhales
What was the mission of al-Qaeda?
How did the Constitution overcome the weaknesses of the Articles of Confederation?
True or False A main difference between the ancient Greek and Roman governments was that in Rome all men could vote, while in Greece only the wealthy men had th
How did Japan respond to the US embargo and freeze on assets? Japan negotiated a temporary moratorium on the sanctions. Japan refused to back down on its stance
Those people who favor allowing or increasing immigration levels state that newly arrived immigrants:
Detached earlobes are dominant. A child inherits genes with the genotype: EE and ee. What is the chance that they will have detached earlobes? a. 25% chance b
if a= lw and if l= 1.5 and w = 0.75 what does a equal
Why did the North have more capital than the South? The North made more money on its farm produce. The South did not produce any goods to sell in trade. The Sou