Exercises 111-122: (See Examples 12 and 13.) If possible write the given general equation of a circle in standar form by completing the square, and identify the center an radius. Graph the circle. 111. x² + 6x + y - 2y = -1 112. x? + y? + 12y + 32 = 0 113. x? + 6x + y? – 2y + 3 = 0 114. x - 4x + y² + 4y = -3 115. x + 6x + y + 8y + 9 = 0 116. x² + 8x + y² – 6y + 16 = 0 117. x - 4x + y + 12y = -4 118. x - 12x + y? + 10y = -25 119. 4x? + 4x + 4y² - 16y – 19 = 0 120. 9x + 12x + 9y² = 18y = 23 = 0 121. x + 2x + y – 6y + 14 = 0 122. x + 4x + y² - 8y + 32 = 0

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