Alright so,
Rearragnge the equation to better see what to do!

Now, complete the square for

to:

Remember, this is done by using
^2 )
Do the same with

You'll get
^2 + (y -1)^2 - 5 = -1)
Which is
Do this for the rest.
Yo Latex is a blast. Never put so much effort into the steps of a simple question