Question

10. The answer isn't letter B. b2-4ac=7

Answer 1

Answer:

A. b2 – 4ac = –12

Step-by-step explanation:

discriminant must be minus cause the graph doesn't cross the x-axis .in other words it doesn't have an answer.plus , the "a" of the equation is minus too.

Answer:

A)

Step-by-step explanation:

1) To answer this question, we must remember what this discriminant stands for:

2) We must plug in this discriminant, in the square root of Quadratic  Formula, to find its roots, i.e.:

The discriminant is a radicand.

3) The graph above shows us no Real roots for this equation then we have roots ∈ Complex Numbers, in other words:

4) So, it's A.