emmers111
emmers111 emmers111
  • 12-12-2017
  • Mathematics
contestada

Which of the following is a solution of x2 + 2x + 8?

Which of the following is a solution of x2 2x 8 class=

Respuesta :

MuchoE
MuchoE MuchoE
  • 12-12-2017
Using the quadratic equation we get:
[tex] \frac{ - 2 + - \sqrt{4 - 32} }{2} = \frac{ - 2 + - \sqrt{ - 28} }{2} [/tex]

Factoring out 2 we get
[tex] \frac{ - 2 + - 2\sqrt{ - 7} }{2} = - 1( + - ) \sqrt{ - 7} [/tex]
Factoring out the imaginary number:
[tex] - 1 + \sqrt{7} i \: (and) \: - 1 - \sqrt{7} i[/tex]
So b.
Answer Link

Otras preguntas

Which number does not belong to the pattern below? Explain. 5,470, 547, 54.7, 0.547
Which table shows a function that is decreasing only over the interval (–1, ∞)? A 2-column table with 6 rows. The first column is labeled x with entries negativ
Please help me with number 3
2. Finance Planners recommend no more than 30% of your income should be your rent. 1. How much should Hagatha spend on rent if she brings home $2,000 per month?
What is Anne's tone in this passage? What is Anne's perspective toward her family? ​
choose two answers for this problem pls
When was a tsunami wave expected to reach Hawaii, and what was the expected wave height?
change 4 and 3/5 to an improper fraction​
Write an exponential model given the two points ​(10​,130​) and ​(11​,240​).
How many absences are allowed in high school to graduate.