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4-54.

Given the parabola , complete parts (a) through (c) below. Homework Help ✎

  1. Find the vertex by averaging the -intercepts.

  2. Find the vertex by completing the square.

    You will need on the right side of the equation to complete the square.

  3. Find the vertex of using your method of choice.

    Use one of the methods from part (a) or part (b).