Question 119298
I got the same result:
4 * (x-5)^2 = -32
(x-5)^2 = -8
x-5 = +/-2i * sqrt(2)
x = 5 +/-2i * sqrt(2)

proof:
4 * (x-5)^2 =
4 * ([5 +/-2i * sqrt(2)] - 5)^2 =
4 * (+/-2i * sqrt(2))^2 =
4 * (+/-2)^2 * i^2 * sqrt(2)^2 =
4 * 4 * -1 * 2 = -32