Which of the following are true of a quadratic function whose discriminant is zero? (You may select more than one answer; to receive credit you must select all true statements)
A
A possible equation for the function is f(x) = x2 – 10x + 25.
A possible equation for the function is f(x) = x2 - 4x + 9.
B
С
The function has a double root.
D
The function has two, real, discrete roots.
E
The graph has no x-intercepts.