Question

Using the Quadratic Formula, which of the following is the solution to the quadratic equation 2x2 + 3x - 5 = 0?

a. x = - 5/2 x = -1


b. x = - 5/2, x = 1


c. x = 5/2, x = 1


d. x = 5/2, x = -1

Answer 1

Answer: B

Explanation:

x1,2 = -3±√9+40 / 4 = -3±7 / 4 => x1 = -3-7 / 4 = -10/4 = -5/2

x2 = 7-3 / 4 = 4/4 = 1