shacorilowe678 shacorilowe678
  • 04-02-2020
  • Mathematics
contestada

Solve the quadratic equation for x. What is one of the roots?

2x2 + 9x − 5 = 0
A) −
1
2
B) −
1
5
C)
1
2
D)
1
5

Respuesta :

Аноним Аноним
  • 04-02-2020

Answer:

x₁ = 0,5

x₂ = - 5

Step-by-step explanation:

2x² + 9x - 5 = 0

2x² + 10x - x - 5 = 0

2x(x + 5) - (x + 5) = 0

(2x - 1)(x + 5) = 0

2x - 1 = 0 ⇒ 2x = 1 ⇒ x₁ = 1/2 ⇒ x₁ = 0,5

x + 5 = 0 => x₂ = - 5

Answer Link

Otras preguntas

meiosis i produces _____ cells, each of which is _____.
when do babies start teething
how many bones does the human ear have
when is good friday in 2016
The setting of William Shakespeare s play The Tragedy of Julius Caesar takes place in the city of __________. Venice Gaul Rome London
3±i write the quadratic equation with the given roots
what are the benefits of green tea
Why did Christianity took over in early Rome?
It seems that the vice president has broken some laws. What can be done about the situation?
the products of restriction digestion can be visualized by gel electrophoresis, which separates fragments based on their size.