Question: Use a graphing utility to (a) approximate two x-intercepts of the graph of the function (to four decimal places) and (b) give the approximate zeros

Use a graphing utility to (a) approximate two x-intercepts of the graph of the function (to four decimal places) and (b) give the approximate zeros of the function.
1. y = x2 - 7x - 9
2. y = 2x2 - 4x - 11

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