wendymdz28 wendymdz28
  • 25-02-2020
  • Mathematics
contestada

Which equation has the solutions x = 1+ V5?
A) x^2 + 2х + 4 = 0
B) x^2 — 2х + 4 = 0
C) х^2 + 2х – 4 = 0
D) x^2— 2х – 4 = 0

Respuesta :

dannielle
dannielle dannielle
  • 27-02-2020

Answer:

x^2-2x-4=0

Δ=2^2-4*1*(-4)

Δ=4+16=20

VΔ=2V5

x1= (2+2V5)/2=1+V5

the answer is D

Step-by-step explanation:

Answer Link

Otras preguntas

Which type of personality disorder is characterized by extreme introversion and withdrawal from relationships? schizoid histrionic borderline paranoid?
what personal characteristics might have helped these two students be successful ?
Hydrogen reacts with oxygen to form only water. if 16 grams of hydrogen is mized with 16 grams of oxygen, how much water can form
Distribution intensity is commonly divided into three levels:
The _________ sort usually performs fewer exchanges than the ________ sort.
Which guideline should you follow when selecting the font for a presentation?
Where did the water that filled the oceans come from?
22/3 as a mixed number
To turn your households rancor to pure love meaning
A scientist wants to create a drug that will kill cancer cells upon absorption in the intestines. In order for the drug to work effectively, it must not be abso