Answer:
A: 0
B: There is one real root with a multiplicity of 2.
Explanation:

A:
The discriminant of the quadratic equation can be found by using the formula:
.
In this quadratic equation,
I found these values by looking at the coefficient of
and
. Then I took the constant for the value of c.
Substitute the corresponding values into the formula for finding the discriminant.
Simplify this expression.
The answer for part A is

B:
The discriminant tells us how many real solutions a quadratic equation has. If the discriminant is
- Negative, there are no real solutions (two complex roots).
- Zero, there is one real solution.
- Positive, there are two real solutions.
Since the discriminant is 0, there is one real root so that means that the first option is correct.
The answer for part B is