Question

determine a equacao reduzida da circuferencia de centro (1;3) e raio 5.

Answer 1

Bom (x-x1)^2+(y-y1)^2=r^2 (x-1)^2+(y-3)=5^2 (x-1)^2+(y-3)^2=25 Moçambique

Answer 2

$\large\boxed{(x-a)^2+(y-b)^2 = r^2}}\\ \\ C(1;3);~r=5\\ \\ (x-1)^2+(y-3)^2 = 5^2\\ \\ \large\boxed{(x-1)^2+(y-3)^2=25}$