Solving quadratic equations by completing the square
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Solving quadratic equations by completing the square
Quadratic equations (Year 10)
Year 10
So, we have learned how to complete the square, but did we learn much about why we are doing it? Well, a little bit! In this video, I look at how we can solve quadratic equations by completing the square. I look at why we want to complete the square and what it means to solve an equation. In this video, we decide that solving means to make the value of y in each equation equal to zero. Why? Well, this allows us to find the x-axis intercepts ... which is what we mean (at the moment) by solving an expression. There are a number of worked examples and a smattering of jokes and humour. I really hope you enjoy it!
Published: Oct. 25, 2018
Length: 12 mins and 29 seconds
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