# [Video] A-Math: Quadratic Equation & Discriminant (Plus Common Mistakes & Counter Measures)

Commonly asked in school and 'O' Level Examinations, many students also commit to commonly made mistakes. Watch the video (5 minutes) and see how you can add another 3 marks easily.

Leave me your comment. I would love to hear from you.

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### Ai Ling Ong

Hi, I'm Ai Ling Ong. I enjoy coaching students who have challenges with understanding and scoring in 'O' Level A-Maths and E-Maths. I develop Math strategies, sometimes ridiculous ideas to help students in understanding abstract concepts the fast and memorable way. I write this blog to share with you the stuff I teach in my class, the common mistakes my students made, the 'way' to think, analyze... If you have found this blog post useful, please share it with your friends. I will really appreciate it! :)

### 4 Responses to [Video] A-Math: Quadratic Equation & Discriminant (Plus Common Mistakes & Counter Measures)

1. Very good video for students to learn Quadratic Equations, as well as a teaching tool for teachers and tutors. Keep sharing! I will share this video blogpost with my readers.

2. John kaluba says:

Thanks great mathematician for sharing knowledge. I am looking forward to learning more from you.

3. tckok says:

Many of us forget to change the inequality sign when we arrive at this stage

-12k < -36
k < 3

Glad you have shown a better way to avoid the above error.
Thanks