radius
2
Round.
|z-2+2i|=|(a-2)+(b+2)i|= radical sign [(a-2) 2+(b+2) 2]
ask
Value,
Seek a circle
main points
(2,-2)
Distance.
show
(2,-2)
Diameter and circle
The intersection point is satisfied.
straight line
travel
: b=-a substitution
Formula: A 2+A 2 = 4
A=(+/-) root number 2.
a=-
Square root of 2
Value,
: radical number [(-radical number 2-2) 2+ (radical number 2+2) 2] = 2+2 radical number 2.