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April 18, 2015

April 18, 2015

Posted by **Jonathan** on Wednesday, August 8, 2007 at 4:34pm.

y=x^2+4x-1

y=(x^2+4x+8)-1-8

y=(x+2)^2-9

This isnt one of my answer choices,what am I doing wrong?

in second line:

y=(x^2+4x

(take one half of the middle coefficient, then square it)

y=(x^2+4x + 4 )-1 - 4

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