Question: In Problems 7-14, complete the square in x and y to find the center and the radius of the given circle. 7. x +

In Problems 7-14, complete the square in x and y to find the center and the radius of the given circle. 7. x + y + 8y = 0 9. x + y + 2x - 4y - 4 = 0 11. x + y - 20x + 16y+ 128 = 0 13. 2x + 2y + 4x + 16y+ 1 = 0 - 8. x + y = 6x = 0 2 10. x + y-18x - 6y - 10 = 0 2 12. x + y + 3x - 16y+ 63 = 0 12 5 14. x + y + x + 10y+50

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