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5-65.

Determine the exact ‑intercepts of .

Let , then solve for .

  1. What are the approximate -intercepts? Sketch a graph of the parabola.

  2. Refer to the Math Notes box in this lesson. Are the solutions to the equation rational or irrational numbers? Explain.

    Is a perfect square?

  3. What are the coordinates of the vertex of the parabola? Is your answer exact or approximate?