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

Can we see or feel energy?
what is 12/75 simplest form
Find the missing number in the patter explain your reasoning 12,24,72,288
what is the number 8.293 round in the tenths
Angela earns $6.25 per hour babysitting. Estimate how much she will earn if she babysits for 9 hours this weekend. Explain.
what river runs a few miles south mason
Why was the pharaoh's authority never questioned
Is 5.78778777 a rational or irrational number?..
What demands did colonists in this region place on the American Indians who lived there?
What was one major effect of industrialization on American society?