2 x + 6*x - 5
x^2 + 6*x - 5
/ ____\ / ____\ \x + 3 - \/ 14 /*\x + 3 + \/ 14 /
(x + 3 - sqrt(14))*(x + 3 + sqrt(14))
2 -5 + x + 6*x
-5 + x^2 + 6*x
-5.0 + x^2 + 6.0*x
-5 + x*(6 + x)