Question #N606
The equation $x^2 - 6x + 9 = 0$ has exactly one solution. What is the value of the solution?
A. 0
B. 3
C. 6
D. 9
Correct Answer is: B
The equation is a perfect square trinomial, which can be factored as $(x-3)^2 = 0$. Taking the square root of both sides yields $x-3 = 0$. Adding 3 to both sides of the equation yields $x=3$. Therefore, the solution to the equation is 3.