Question

por favor preciso pra agora

preciso das três ​

Answer 1

1)

a)

$(x-2)^2+(y-3)^2=4\Rightarrow C=(2,3)$

b)

$(x+7)^2(y-9)^2=64\Rightarrow C=(-7,9)$

2)

$d(X,C)^2=9,\ X=(x,y)\Rightarrow d(X,C)^2=(x-2)^2+(y-5)^2\\\Rightarrow \Theta :(x-2)^2+(y-5)^2=9$

3)

$x^2+y^2-6x-8y-39=0\\(x^2-6x)+(y^2-8y)-39=0\\(x^2-6x+9)+(y^2-8y+16)=39+9+16\\(x-3)^2+(y-4)^2=64\Rightarrow C=(3,4),\ R=8$