2 x - 6*x - 10
x^2 - 6*x - 10
2 -10 + x - 6*x
-10 + x^2 - 6*x
/ ____\ / ____\ \x + -3 + \/ 19 /*\x + -3 - \/ 19 /
(x - 3 + sqrt(19))*(x - 3 - sqrt(19))
-10 + x*(-6 + x)
-10.0 + x^2 - 6.0*x