What is the discriminant of the quadratic equation 2x + 5x2 = 1? - 18 - 16 22 24

24

Step-by-step explanation:

Given a quadratic equation in standard form, ax² + bx + c = 0 (a ≠ 0)

Then the discriminant is

b² - 4ac

Given

2x + 5x² = 1 (subtract 1 from both sides)

5x² + 2x - 1 = 0 ← in standard form

with a = 5, b = 2, c = - 1, then

b² - 4ac = 2² - (4 * 5 * - 1) = 4 - ( - 20) = 4 + 20 = 24