Answer:
x = 3 ±√(b + 9).
Step-by-step explanation:
We use Completing the Square:
x^2 - 6x = b
(x - 3)^2 - 9 = b
(x - 3)^2 = b + 9 Taking square roots of both sides:
x - 3 = ±√(b + 9)
