keannaspam7 keannaspam7
  • 04-08-2020
  • Mathematics
contestada

Solve the following non-linear system of equations algebraically.
y = - 2x² - 4x + 5 and
y = 2x^2 + 4x + 5

Respuesta :

raskolnikov
raskolnikov raskolnikov
  • 04-08-2020

Answer:

x = -2

Step-by-step explanation:

since y is common in both equations, you can equate them to be equal

-2x² - 4x + 5 = 2x² + 4x + 5

4x² + 8x = 0

factor out 4x

4x(x + 2) = 0

divide both sides by 4x

x + 2 = 0

x = -2

Answer Link

Otras preguntas

The table shows the number of Salvador has read. Find the ratio of mystery books to the total. Explain it's meaning. (look at the picture of the table)
which of the ordered pairs in the form (xy) is a solution of this equation? 6x - y/2 =14 (-9, 3), (2, - 4) A. Neither is a solution в. The first is not a soluti
The perimeter of the top of a desk is 54 inches. If the length of the desk is 15 inches, what is the width of the desk?
Which word in the sentence is an interjection? Oh, I don't know what to do anymore. A. anymore B. oh C. know D. I
What are two ways in which simple villages became more complex
what is the most important blood cell in your body?
why would upton Sinclair be considered a muckraker?
Whats 0.67 closest to 0,1/2,or 1 ?? Explain
what is the opposite of dreamy-eyed
Which of the following statements about paper recycling is not true? a. Recycling one ton of newspaper can save 100 trees. b. Recycling paper can lead to 74% le