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Question

What points in the xy-plane satisfy the equations and inequalities in Exercises 11–12? Draw a figure for each exercise.

11. (x2 - y2 - 1)(x2 + y2 - 25)(x2 + 4y2 - 4) = 0

12. (x + y)(x2 + y2 - 1) = 0

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Calculus

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