Identifying the transformations of a quadratic by completing the square

The video tutorial explains the process of completing the square for quadratic equations. It begins by rewriting the equation in descending order and factoring out a negative one if necessary. The instructor then demonstrates how to create a perfect square trinomial by dividing the B term by two and squaring it. Adjustments are made to the equation to maintain balance, and the trinomial is factored into a binomial squared. Finally, the video covers graphing the function, identifying the vertex, and understanding transformations such as shifts and reflections.

Describe the vertex of the function after completing the square.

How does the negative sign outside the parentheses affect the graph of the function?