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

State the name of the reaction for the traditional making of lime?
I need help with my math homework
Carbohydrates that have calories, but are low in nutrients are called what
2.1.1 723+586Rounding off the numbers to the nearest 100​
The molar concentration of NO3− ions in a 0.054 M solution of Ca(NO3)2 is ______
Information I could share about my topic:
write an assignment with the question explain why the methods used to teach learners in african indigenous can still be by teachers today History and philosophy
Lauren was boiling milk the milk boil that 363k at what temperature did the milk boil in degrees Celsius​
WILL GIVE BRAINLIEST IF ANSWERED FAST!!!
WILL GIVE BRAINLIEST FOR QUICK ANSWERS!! I RATE WELL FOR GOOD ANSWERS!!