Graph a quadratic by completing the square by factoring out a negative 1

The video tutorial explains how to graph a quadratic equation by completing the square. It begins with converting the quadratic from standard form to vertex form. The process involves factoring out a negative, completing the square, and determining the vertex. The tutorial also covers how to graph the quadratic, noting the direction of the parabola and its vertex. The video concludes with a demonstration of plotting the graph and understanding its properties.

Explain the process of adding and subtracting a number when completing the square.

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What is the significance of the perfect square trinomial in the process of graphing a quadratic?

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