kotayeo
kotayeo kotayeo
  • 02-09-2020
  • Mathematics
contestada

Select the solutions of the equation. x2 + 3.5x - 2 = 0 ​

Select the solutions of the equation x2 35x 2 0 class=

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luisecubero77
luisecubero77 luisecubero77
  • 04-09-2020

Answer:

x₁ = -4

x₂ = 0.5

Step-by-step explanation:

x² + 3.5x - 2 = 0                 * 2

2x² + 7x - 4 = 0 ​

(2x + 8)(2x -1)/2 = 0

2(x + 4)(2x - 1)/2 = 0

(x + 4)(2x - 1) = 0

x + 4 = 0

x₁ = -4

2x - 1 = 0

2x = 1

x₂ = 1/2

x₂ = 0.5

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