2 x - 6*x - 9
x^2 - 6*x - 9
/ ___\ / ___\ \x + -3 + 3*\/ 2 /*\x + -3 - 3*\/ 2 /
(x - 3 + 3*sqrt(2))*(x - 3 - 3*sqrt(2))
2 -9 + x - 6*x
-9 + x^2 - 6*x
-9.0 + x^2 - 6.0*x
-9 + x*(-6 + x)