In Problems 1-3, use the process of completing the square to transform the given equation to a

Question:

In Problems 1-3, use the process of completing the square to transform the given equation to a standard form. Then name the corresponding curve and sketch its graph.
1. 4x2 + 4y2 - 24x + 36y + 81 = 0
2. 4x2 + 9y2 - 24x - 36y + 36 = 0
3. x2 + 8x + 6y + 28 = 0