SOLUTION: The equation of a parabola is given. y=−112x2−2x−1 What are the coordinates of the focus of the parabola?

1)  Switch sides to: 

2)  Get the Xs on the LEFT side, and the constant on the RIGHT

3)  Complete the square on the Xs

4)  Get the equation in the CONIC FORM of a parabola with a VERTICAL axis, or in the form: 

5)  Compare the 2 equations to determine the coordinates of the focus, which are: (h, k + p).

    You should know what I'm talking about, but if you feel you don't, then you need to open a book, or check online.

    Here's a link to a similar problem that you could use: 

    https://www.algebra.com/algebra/homework/Quadratic-relations-and-conic-sections/Quadratic-relations-and-conic-sections.faq.question.618495.html