Here is a Quadratic Discriminant Question with the mark scheme, together with a video solution:
Quadratic Discriminant Example (3.18)
Quadratic Discriminant Example Solution
Further Practice:
Quadratic Discriminant Questions
Here is a Quadratic Discriminant Question with the mark scheme, together with a video solution:
Quadratic Discriminant Example (3.18)
Quadratic Discriminant Example Solution
Further Practice:
Quadratic Discriminant Questions