Mathematics, 24.02.2021 17:00 RobbyO

1. Use the equation x2 + 4x + y2 = 21 to answer the following questions a. Find all points (x, y) on the graph that have horizontal tangents.

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1. Use the equation x2 + 4x + y2 = 21 to answer the following questions a. Find all points (x, y) o...