Respuesta :

2x^2 +5x +3
2              * 3 = 6
6=
1*6 but 1+6 > 5
2*3 and 2+3 = 5
so
2x^2 +5x +3 =
2x^2 +2x +3x+3 =
2x(x+1)+3(x+1)=
(2x+3)(x+1)