larnold37 larnold37
  • 17-06-2020
  • Mathematics
contestada

Given 2x² = -8, x is ____

Respuesta :

snog
snog snog
  • 17-06-2020

Answer:

2x² = -8

x² = -4

The answer is no real solutions (x ∉ R) because a perfect square cannot be negative.

Answer Link
SvetkaChem
SvetkaChem SvetkaChem
  • 17-06-2020

Answer:

No real solutions, but there are complex solutions

x=2i and x = -2i.

Step-by-step explanation:

2x² = - 8

x² = - 4

x = +/- √(-4)= +/-√[(-1)*4] = +/-[√4 *√(-1)] = +/- [2*i]

x=2i and x = -2i

Answer Link

Otras preguntas

when a jug is 1/5 full and it weighs 250 grams next it 4/5 full and weighs 550 grams what is the weight of the jug?
the road you're traveling the pavement markings change from broken white lines to solid white lines between the lines of traffic. What does the line change mean
1.Explain three ways you can get home safely, without getting behind the wheel, if there are drugs or alcohol in your system.
what is the comparison contrast eligatarian society and the modern society ?
What are four physical properties of aluminum foil?
7. Brad put 10 crickets in his pet After one day Brad's lizard had eaten of the crickets he had put in the cage. By the end of the next day the lizard had eate
describe two setback walt Disney experienced
What is the product? –9x(5 – 2x)
The ban on liquor sales as outlined in the Eighteenth Amendment was called: New Deal Prohibition Progressivism
Please help I'm stuck