Answer:
The answer is D.
Step-by-step explanation:
We have to apply Discriminant Law. When a quadratic equation, ax² + bx + c = 0 has equal roots so the discriminant will be 0. Then, you have to substitute the values into the formula :








I’m think it is the median
6÷2=3
(C) is the correct awnswer
Skip/ Addy had 3 green marbles