Final answer:
The values of numbers a, b, c that make matrix B invertible depend on the determinant of the matrix, which is not provided. The question likely refers to the discriminant of the quadratic equation, which must be non-negative for real solutions to exist.
Step-by-step explanation:
To determine for what values of the numbers a, b, and c the matrix B is invertible, we would typically look at the determinant of the matrix if it was provided.
Since the question seems to be misphrased and does not offer a matrix, but provides values and refers to the quadratic formula, we can address the condition for the quadratic equation ax2 + bx + c = 0 to have solutions, which relates to the discriminant b2 - 4ac.
The quadratic formula -b ± √(b2 - 4ac) / 2a yields real solutions if the discriminant is non-negative. When the discriminant is positive, there are two distinct real solutions; when it is zero, there is exactly one real solution (a repeated root).