Aquadratic equation has exactly one real number solution. which is the value of its discriminant? will mark brainliest

a.−1
b.0
c.1
d.2

B: 0
Explanation: For a quadratic equation to have one real root, the discriminant must always be 0. In order to understand this principle, we need to take a step back and understand what the quadratic formula means.

In order to find what the roots are, we use the quadratic formula. Keep in mind the expression before the discriminant:



Notice the appearing before the discriminant. For only one solution, we would need that plus minus sign to disappear, and the only way in doing so is if the discriminant was equal to zero.