Hi I'm Harvey in London and I'm back at college after almost two decades of no academic studies and have my 1st assignment due in a week. I've managed to get all the questions answered but have been struggling with a particular on completing the square to solver a quadratic and have two issues with it:

Firstly I keep getting surd form answers for myxvalues, is this ok if I am to sketch the curve for it???

Secondly, that's if it's not ok, then can someone please tell me where I'm going wrong.

I have attached the question and my method of solving in a word doc to this message,

Please please can help me out here; I don't know how many hours I spent on this one question already

P.S. as this is an assignment question, obviously, I'm not asking for the answers just help with methodology