Question 388348
1

Answer: two unequal real solutions 


2


(x-4)^2+(y+4)^2=4
x^2-8x+16+y^2+8y+16-4=0
x^2+y^2-8x+8y+28=0



3

Answer: (x - 4)2 + (y + 10)2 = 100