The equation of the circle shown in the following diagram can be written as x^2 + Ay^2 + Bx + Cy + D = 0. Find A + B + C + D.
Find radius using distance formula for the two given points
r = sqrt (61)
center (h,k) = -1, 1
(x+1)2 + (y-1)2 = 61 this is the equation of the circle
expand and arrange in the form requested in the Q to find ABCD to finish...........