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

after typing ! of a term paper on Friday, Richard completed 1/2 of the remainder on Saturday. If he wanted to finish the paper that weekend, what part was left
Consider the graph of the quadrasc function. Which intervalon the axis has a negative rate of change?2 to-11.5 to 00 to 11 to 25
what does the pilot want "The cold equations by Tom Godwin"
What is the slope of a line of best fit if its equation is y = 5x – 4?
what is the mass of cement block that requires a force of 200 n to accelerate it at 5 m/s2?
all countries have what type of economy
choose an equation in slope-intercept form for the line that passes through (0,7) and is parallel to the y=4x-19. select one: a. y = 4x 3 b. y = 4x 7 c. y= (1/4
mike and kim invest $14,000 in equipment to print yearbooks for schools. each yearbook costs $7 to print and sells for $35. how many yearbooks must they sell be
what is a chart sheet?
The amount $2.88 is 9% of what price? A - $25.92 B - $32.00 C - $259.20 D - $320.00