Resposta:
[tex]\textsf{Leia abaixo}[/tex]
Explicação passo a passo:
[tex]\mathsf{C(2;-1)\iff r = 3}[/tex]
[tex]\mathsf{(x - a)^2 + (y - b)^2 = r^2}[/tex]
[tex]\mathsf{(x - 2)^2 + (y - (-1))^2 = 3^2}[/tex]
[tex]\boxed{\boxed{\mathsf{(x - 2)^2 + (y + 1)^2 = 9}}}\leftarrow\textsf{reduzida}[/tex]
[tex]\mathsf{x^2 - 4x + 4 + y^2 + 2y + 1 = 9}[/tex]
[tex]\mathsf{x^2 + y^2 - 4x + 2y + 5 = 9}[/tex]
[tex]\boxed{\boxed{\mathsf{x^2 + y^2 - 4x + 2y - 4 = 0}}}\leftarrow\textsf{geral}[/tex]
[tex]\mathsf{C(-3;12)\iff r = \sqrt{2}}[/tex]
[tex]\mathsf{(x - a)^2 + (y - b)^2 = r^2}[/tex]
[tex]\mathsf{(x - (-3))^2 + (y - 12)^2 = (\sqrt{2})^2}[/tex]
[tex]\boxed{\boxed{\mathsf{(x + 3)^2 + (y - 12)^2 = 2}}}\leftarrow\textsf{reduzida}[/tex]
[tex]\mathsf{x^2 + 6x + 9 + y^2 - 24y + 144 = 2}[/tex]
[tex]\mathsf{x^2 + y^2 + 6x - 24y + 153 = 2}[/tex]
[tex]\boxed{\boxed{\mathsf{x^2 + y^2 + 6x - 24y + 151 = 0}}}\leftarrow\textsf{geral}[/tex]