He general form of the equation of a circle is 7×2 + 7y2 − 28x + 42y − 35 = 0.The equation of this circle in standard form is (x – 2)^2 + (y + 3)^2 = 5 (x – 2)^2 + (y + 3)^2 = 18 (x – 4)^2 + (y +

He general form of the equation of a circle is 7×2 + 7y2 − 28x + 42y − 35 = 0.

The equation of this circle in standard form is (x – 2)^2 + (y + 3)^2 = 5 (x – 2)^2 + (y + 3)^2 = 18 (x – 4)^2 + (y + 6)^2 = 24 (x + 4)^2 + (y – 6)^2 = 24 (x + 2)^2 + (y – 3)^2 = 35 . The center of the circle is at the point (-14, 21) (-2, 3) (2, -3) (-4, 6) (4, -6) , and its radius is 5^(1/2) 3(2^(1/2)) 2(6^(1/2)) 35^(1/2) units.