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Completing The Square, Part 1 of 3

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Uploaded by on Jul 19, 2007

Here explain why the method for completing the square works, and I do do a few simple examples. In part 2 I will solve a few non-factorable quadratic equations.
Produced by
Kent Murdick
Instructor of Mathematics
University of South Alabama

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Howto & Style

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Standard YouTube License

  • likes, 4 dislikes

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Uploader Comments (Lutemann)

  • how do i complete this: 3X^2+4Y^2-12X+16Y- 72 = 0

  • @TheTeachaSehGaza watch part 2 and 3

  • I made that about 10 years ago with terrible equipment. I wish I had the resources to do a better job.

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All Comments (32)

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  • "Whoops! Put a little line there." Hahaha

  • @toperkz It's not impossible. Multiplaction doesn't necessarily make things bigger. When you multiply fractions, you multiply the top and bottom numbers. Simple as that.

    Math is abstract - nothing directly relates to the real world. It relates abstractly. You can only add, say 1/2 of a sheep to another to get a full sheep. If you multiply them, you get 1/2 of the sheep cutting into the other to make 1/4 of a sheep.

  • @kiera791 exclamation mark and smiley face in order to patronize! hurray!

  • @ZePivotMaster Let's see... a trinomial is an equation with three terms. Terms are numbers, separated by signs (+/-). I was taught this at the beginning of learning how to complete the square and I'm sure everyone else in my class was too. Not all were in 'G' like myself, either.

  • I lost you at the third part of "Lets examine the perfect square trinomials"

  • Okay I'm trying to revise this/learn it for my test on monday so If Lutemann could help me out ASAP it'd help!

    I dont understand, your making it to complex, this is GCSE! not A level! what the hell is a trimonial ?

    We need simple help, not an oxford dictionary + A level maths combined into the ultimate way of quadratics!

    Can you please explain to me, step by step via a message or something please?

  • i can see u are obsviously dont get it and are frusterated! ^^

  • U rock!

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