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

Compare -9 and 8. -9<8 -9>8
Graph the line with the equation y=1/6x-7
what description best defines heath
Who has more energy? Raging Martians or X-Ray Guns?
HELLLLLPPPPPPP PLZZZZZZ HELP A$AP PLZZZZZZZZZ I WILL MARK BRAINLEST
Do 3 lines always, sometimes or never intersect at one point?
Select the correct answer. Why did the British colonists want to gain territory in the Ohio Valley? A. The British wanted to expand their fur trade. B. The re
4.5 and 5 are respectively the average of 2sets of number 3, 4, x, y and 2x, y, 4, 3, find the value of x, y​
3u+5u=64 What is the simplify of this What does u
What is a Academic paragraph please explain!!!!!!!!!!!!!!!!!!!!!!!!!!!!!