Answer:
[tex](x-3)^2[/tex]
(x - 3)(x - 3) or (x - 3)^2.
Step-by-step explanation:
x^2 - 6x + 9
-3 * -3 = +9 and -3 + -3 = -6 so the factors are
(x - 3)(x - 3).
