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Equation is:

(x - -1)² + (y - 1)² = 1²

→ (x + 1)² + (y - 1)² = 1

By expanding the brackets and rearranging, this becomes:

(x² + 2x + 1) + (y² - 2y + 1) = 1

→ x² + 2x + y² - 2y + 1 = 0

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Q: What is the equation for a circle with a center of negative 1 1 and a radius of 1?
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