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Mathematics 13 Online
OpenStudy (anonymous):

y=2x^2+4x-8 The x-coordinate of this vertex is located at ____.

OpenStudy (anonymous):

|dw:1377624337276:dw|

OpenStudy (anonymous):

Sorry, I mean -8 is located at y.

OpenStudy (anonymous):

i dont get it @Lagoonabarbie @Yahoo!

OpenStudy (debbieg):

x-coordinate of the vertex is given by x=-b/(2a)

OpenStudy (debbieg):

Just plug b and a into that. that's your x at the vertex.

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