2025 CGSS PRELIMS P2 Q3
2025 CGSS PRELIMS P2 Q3
Secondary 4
7 marks
- Solve the equation \(3x^3 - 11x^2 + 3x + 2 = 0\), expressing non-integer roots in surd form.[5]
- Hence, solve the equation \(x^3 + 11x^2 + 9x - 18 = 0\), expressing non-integer roots in surd form.[2]
Video Solution:
Video solution locked
A free account saves your progress; this video needs a course plan.
Solution:
Solution locked
680+ questions here come with free worked solutions. A free account saves your questions and progress; this one needs a course plan.
Create a free account to practise similar questions.
Answer:(a) \(x=\frac{2}{3},\ \frac{3+\sqrt{13}}{2},\ \frac{3-\sqrt{13}}{2}\) (b) \(x=-2,\ \frac{-9-3\sqrt{13}}{2},\ \frac{-9+3\sqrt{13}}{2}\)
Need help? Join our A-Maths tuition classes.
Learn more