Respuesta :

Answer: 1.  a) discriminant

              4.  b) No. when < 0 it has no Real solutions

Step-by-step explanation:

All of the other answers are correct.

In the quadratic expression, the solutions are defined by the discriminant (b² - 4ac) as follows:

  • Discriminant < 0:   2 complex solutions (no Real solutions)
  • Discriminant = 0:    1 Real Solution
  • Discriminant > 0:    2 Real solutions