Question Part (b)
Marking step 1
Description of marks: Solve a quadratic equation
[1 mark for using null factor law]
[1 mark for getting the roots]
Option type: Multiple (checkboxes)
Marking prompt : Which of the following calculations did you perform?
Options:
- I used null factor law.
- I got \(x=\frac{1}{4}+\frac{\sqrt{41}}{4}\quad or\quad x=\frac{1}{4}-\frac{\sqrt{41}}{4}\) as the roots.
Worked solution: