2 x + 2*x - 3
x^2 + 2*x - 3
(x + 3)*(x - 1)
2 -3 + x + 2*x
-3 + x^2 + 2*x
-3 + x*(2 + x)
(-1 + x)*(3 + x)
-3.0 + x^2 + 2.0*x