2 2*x + 5*x - 3
2*x^2 + 5*x - 3
(x + 3)*(x - 1/2)
2 -3 + 2*x + 5*x
-3 + 2*x^2 + 5*x
-3.0 + 2.0*x^2 + 5.0*x
(-1 + 2*x)*(3 + x)
-3 + x*(5 + 2*x)