Do you know that roots of a quadratic equation can also mean the solutions, the x intercepts or simply put it the answers to the equation?
It is something we have learnt since lower secondary.
In 2019, GCE O Level Additional Maths Paper 2 Q10 tested candidates on their basic understanding of roots.
11 marks! Wow!
If you have been simply surface learning, you won't get past part (i) of the question.
See the video to see how I approach this question: https://www.youtube.com/watch?v=CPtbpO4At9w