You need to complete the square in x and in y,
[tex] x^{2} + y^{2} + 6x + 4y + 10 = 1[/tex]
First, group the x-terms and the y-terms separately.
[tex] x^{2} + 6x + y^{2} + 4y + 10 = 1[/tex]
Move the 10 to the right side by subtracting 10 from both sides.
[tex] x^{2} + 6x + y^{2} + 4y = -9[/tex]
Now complete the square in x and in y.
The constant you need to add to complete each square is the square of half of the coefficient of the x or y term. Make sure to add the constants to both sides of the equation.
[tex] x^{2} + 6x + 9 + y^{2} + 4y + 4= -9 + 9 + 4[/tex]
[tex] (x + 3)^{2} + (y + 2)^{2} = 4[/tex]
