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8-21.
  1. Solve x2 + 2x − 5 = 0. Homework Help ✎

    1. How many x-intercepts does y = x2 + 2x − 5 have?

    2. Approximately where does the graph of y = x2 + 2x − 5 cross the x-axis?

You could complete the square, find the vertex, and consider the orientation to determine if this parabola has 0, 1, or 2 x-intercepts.