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QUADRATIC FUNCTIONS: Completing the Square, pt. 2

Start from the beginning

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Add c to find C and accordingly, the complete equation:

And that's it! Try a few more problems to see if you get the hang of it.

Moving on to the second form.

This one is pretty much the same as the other, but with one small extra step. To begin, look at the quadratic equation

The extra step is to remove the coefficient of x^2 and multiply the first two terms by it. To keep the equation's value the same, we divide the coefficient of x by the coefficient of x^2, too.

To keep the equation's value the same, we divide the coefficient of x by the coefficient of x^2, too — Oops! This image does not follow our content guidelines. To continue publishing, please remove it or upload a different image.