Which of the following is equivalent to the polynomial below? x^2 - 10x + 61 a. (x-(5--(5+6i)) b. (x+(5-+(5-6i)) c. (x+(5--(5+6i)) d. (x+(5-+(5+6i))

X^2 - 4x +(4/2^2) + y^2 + 8y + (8/2^2) = -4 + (4/2^2) + (8/2^2)(x + 2)^2 + (y + 4)^2 = -4 + 4 + 16your center is (-2, -4) and the radius is the sqrt of -4 + 4 + 16 which is 4