My solution to the problem is as follows:
Divide by 1 and start with:
x^2 / 6 + y^2 / 2 = 1
Since the general form is:
(x−h)^2 / a^2 + (y−k)^2 / b^2 = 1
You can continue my solution and after which, you can now arrive at the center, vertices, and foci of the ellipse.
I hope my answer has come to your help. God bless and have a nice day ahead!