Question

Which quadratic equation does not have a real solution?

a −2x2 − x − 1 = 0
b 6x2 − 2x − 3 = 0
c −2x2 − 8x − 4 = 0
d x2 + 5x + 2 = 0

Answer 1

a

Explanation:

use the discriminant of the quadratic equation to find (b^2-4ac)