Question

a quadratic equation has exactly one real number solution. which is the value of its discriminant?
-1
0
1
2

Explanation:

Step1: Recall discriminant rules

For a quadratic equation \(ax^2 + bx + c = 0\), discriminant \(D = b^2 - 4ac\). If \(D>0\), two real solutions; \(D = 0\), one real solution; \(D<0\), no real solutions.

Step2: Apply to the problem

The equation has exactly one real solution, so \(D = 0\).

Answer:

0 (corresponding to the option with value 0)