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E-Maths: Completing Square Step-by-Step Video (Part 1)


I was talking to my Secondary 3 students in my O-Level E Maths weekly tuition class on Quadratic when they expressed disgust for the technique of Completing Square.

A similar thing happened when Completing Square was an alternative method offered to Equation of Circle concept. There was a collective yucks from the class.

I hope my video will ease the yuckness many students find with completing square technique and give you some hope to conquer it!

Test out your understanding by leaving your answer for the bonus question in the comments below!

Direct link to video: http://www.youtube.com/watch?v=bf8PfyP2h74

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! :)

Filed Under: E-Maths, Video Learning Tagged With: completing square, quadratic equations

Reader Interactions

Comments

  1. clare says

    February 11, 2011 at 1:02 pm

    my answer is: (x-3.5)^2 -17.25
    =D

  2. kimberly says

    February 12, 2011 at 7:30 pm

    x^2 - 7x - 5
    = (x-3.5)^2 - 3.5^2 -5
    = (x-3.5)^2 + 12.25 - 5
    = (x-3.5)^2 + 7.25

    Is this the answer?

  3. Ai Ling says

    February 24, 2011 at 12:57 am

    in front of 12.25 should be a negative sign.

  4. Ai Ling says

    February 24, 2011 at 12:57 am

    Bingo!
    Thank you for participation.

  5. Andrew says

    March 25, 2011 at 6:57 pm

    is this secondary 3 mathes?

  6. Ai Ling says

    April 1, 2011 at 1:55 pm

    Usually Sec 3 or even Sec 2 students would have learnt it by first half of the year.

  7. Eugene says

    March 9, 2013 at 12:06 pm

    I'm from malaysia and is there a way to get your books?

  8. Ai Ling says

    March 20, 2013 at 3:00 pm

    I would suggest to check if Popular Malaysia can order from Popular Singapore.
    Otherwise, come over to Singapore for holidays and buy books too :)

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    February 7, 2011 at 3:15 pm

    [...] This post was mentioned on Twitter by singaporeolevelmaths, Ai Ling, ONG. Ai Ling, ONG said: E-Maths: Completing Square Step-by-Step Video (Part 1): I was talking to my Secondary 3 students on Quadratic wh... http://bit.ly/fnxT4Z [...]

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