Question

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

Answer 1

x₁ = -4

x₂ = 0.5

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