Need help on math

[coconutbowling]

If I have an equation in Standard form, how do I change it to Graphing (vertex) form?

How do I make: y = ax^2 + bx + c, become y = a(x-h)^2 + k

Thanks in advance.

[DHrox]

Oh gosh, I only took Algebra 1, then skipped to Geometry. Crap, I knew this equation!

Here's all that I got:
http://whyslopes.com/Analytic-Geometry-Functions/10_01_quadratics_graphing_in_general.html
http://www.mathnstuff.com/math/spoken/here/2class/320/c32pg00.htm

[coconutbowling]

Thanks. Google wasn't being friendly for me, and I don't have my papers from two years ago.

[DHrox]

Google, the math devourer!

[Fletch]

Don't know if u still need any help, cause those sites looked quite confusing to me, but in general...

h and k are the coordinates of the vertex of the parabola and are equal to -

h = -b/(2a)
k =( c-b^2)/(4a)

[s0mah]

If I have an equation in Standard form, how do I change it to Graphing (vertex) form?

How do I make: y = ax^2 + bx + c, become y = a(x-h)^2 + k

Thanks in advance.

Factor by completing the square.

[coconutbowling]

Thanks guys for the help. I'm still a little confused, but I think I have it now.