a quadratic equation has exactly one real number solution. which is the value of its discriminant?\n-1\n0\n1\…

Answer:

B. 0

Explanation:

Step1: Recall discriminant formula

For a quadratic equation $ax^{2}+bx + c=0$, the discriminant $\Delta=b^{2}-4ac$.

Step2: Recall solution - discriminant relationship

If $\Delta> 0$, the quadratic equation has two distinct real - number solutions. If $\Delta = 0$, the quadratic equation has exactly one real - number solution. If $\Delta<0$, the quadratic equation has no real - number solutions. So when there is exactly one real number solution, $\Delta = 0$.