Question
Question: The equation of the circle touching \(x = 0 , y = 0\) and \(x = 4\) is....
The equation of the circle touching x=0,y=0 and x=4 is.
A
x2+y2−4x−4y+16=0
B
x2+y2−8x−8y+16=0
C
x2+y2+4x+4y+4=0
D
x2+y2−4x−4y+4=0
Answer
x2+y2−4x−4y+4=0
Explanation
Solution
(x−2)2+(y−2)2=4
x2+4−4x+y2+4−4y=4
x2+y2−4x−4y+4=0 .
