3(x2 - 2x + 3)
3X2 + 6X + 9 3(X2 + 2 + 3) -----------------------3 is a common factor of all terms
Just looking at it, one factor is 3.
One factor is 3.
(3X + 9) (X + 9)
x2-6x+9 = (x-3)(x-3) when factorised.
x^2-6x+9 (x-3)(x-3)
(x^18 - 6x^9 + 18)(x^18 + 6x^9 + 18)
(x + 3)(x + 3)
(x+3)(x+3)
(x + 3)(x + 3)
(x - 3)(x - 3)
-3(x - 3)(x + 1)(x + 1)