Describe the set S = {x: x² + 4x <5} as an interval. Hint: Plot x² + 4x - 5. (Use symbolic notation and fractions where needed. Give your answer as intervals in the form (*, *). Use the symbol ∞ for infinity, U for combining intervals, and an appropriate type of parenthesis "(", ")", "[", "]" depending on whether the interval is open or closed.) S =

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