What is the vertex of #y= 2x^2 - 4x + 3#?
1 Answer
Explanation:
Given:
Let the coordinates of the vertex be
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There are two ways of doing this.
It looks as though the fashionable way at the moment is 'completing the square' alternatively known as a 'vertex equation'.
The other, which I am going to show you, is the basis upon which completing the square is built on.
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Write the given equation in the form of:
I have made it such that I have a part that starts with
We now look at the part inside the brackets of
We then do this:
We have now found
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Substitute (2) into (1) giving:
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