Answer: The correct answer is -2,5/2 which is the last answer.
Step-by-step explanation:
* Hopefully the work below helps:)Mark me the brainliest:)!!
Answer: [tex]\bold{\{-2, \dfrac{5}{2}\}}[/tex]
2x² - x - 10 = 0
Replace -x with 4x - 5x and factor using Grouping Method:
2x² + 4x -5x - 10 = 0
2x(x + 2) -5(x + 2) = 0
(2x - 5) (x + 2) = 0
2x - 5 = 0 and x + 2 = 0
2x = 5 and x = -2
x = 5/2
