This is the eighth question of science. Firstly, a 2+b 2-4a+3 = 0 is sorted into the equation of a circle with the center of (2,0) and the radius of 1. . . . . . . I feel dizzy. I can't express it. I don't know how to type many symbols. . . . Get you a handwritten version ~ ~

Don't tell me you can't understand this either. ...