Please help me change this standard form of a parabola to vertex form.

y = 0.2955x^2 + 0.1811x + 22.382

If possible, please use the -b/2a version instead of completing the square, because that is what I was taught.

Thank you for any help!

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- Nov 1st 2008, 12:24 PMlive_laugh_luv27Changing standard form to vertex form
Please help me change this standard form of a parabola to vertex form.

y = 0.2955x^2 + 0.1811x + 22.382

*If possible, please use the -b/2a version instead of completing the square, because that is what I was taught*.

Thank you for any help! - Nov 1st 2008, 12:46 PMJhevon
- Nov 1st 2008, 01:13 PMShyam
- Nov 1st 2008, 01:21 PMlive_laugh_luv27
- Nov 1st 2008, 01:25 PMlive_laugh_luv27
One question --

One post has k= 2ac – b2/2a, the other has k= 4ac – b2/2a.

Who is correct?

Thanks!