Question

Which number is the discriminant of a quadratic equation that has no solution?

1) 0
2) 36
3) -4
4) 5

Answer 1

Answer:

-4

Step-by-step explanation:

If the discriminant is negative there can be no real number solution because the square root of a negative number does not exist (in real numbers).

In the Quadratic Formula, if  $b^2-4ac$  is negative, then you can't find  $\sqrt{b^2-4ac}$.