Solving a cubic equation is similar in some aspects to solving a quadratic equation, factorisation is in action.

In the two videos, I show you the step by step approach I took to solve a cubic equation either by synthetic division or comparing coefficients.

This concept is usually covered in **Secondary 3 Additional Maths syllabus under Factor and Remainder Theorem.**

Step 1 (same for both methods) : Guess and Check the first factor (with the help of the calculator).

Step 2: Find the **Quadratic Factor. **

Leave a comment to share with me which method do you prefer or usually use? I look forward to your comment!

** Video 1: GCE O-Level A-Maths: Solve a Cubic Equation by Synthetic Division **

Direct link: https://www.youtube.com/watch?v=CqCdD9a8q4c

**Video 2: GCE O-Level A-Maths: Solve a Cubic Equation by Comparing Coefficients
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Direct link: https://www.youtube.com/watch?v=6iqG74I07v4